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this truck runs totally on hydrogen as

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it goes down the highway it is producing nothing but water that is certifiably

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awesome but hydrogen technology has gotten quite a bit of hate in the past

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couple years hate I don't think is warranted so let's Deep dive this thing

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where does hydrogen power make sense where does it not and should you buy a

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Toyota marai okay the the answer to the

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last one is basically no but it's early days it's so early I haven't even segue

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to our sponsor yet thanks to AMD for sponsoring this video for a limited time

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processors or radon graphics cards learn more today at the link down

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below there are two ways you can use hydrogen to make a cargo internal

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combustion and Fuel Cell electric on the surface internal combustion sounds

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pretty sweet

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literally you just take a direct injection engine replace the injectors

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with hydrogen ones and with a very non-trivial amount of tuning later

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you're Off to the Races Toyota did this with the engine from the Gris and

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entered a 24-hour endurance race to middling results there are quite a few

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problems with hydrogen internal combustion engines the biggest being

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efficiency only about a quarter of the energy available is turned into making

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your cargo which brings us to fuel cell

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electric vehicles like the truck we saw earlier and this right here the second

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generation Toyota marai these work similarly to a battery

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electric car with normal electric motors providing your acceleration the

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difference is though that when you hit the gas I really appreciate that I can

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still say that here hydrogen is allowed to flow from the storage tank to the

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fuel cell stack inside the fuel cell oxygen like just from the air around you

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is allowed to enter and hydrogen which is just a single proton electron really

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wants to bond with that oxygen to create water unfortunately for that hydrogen

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Toyota placed a proton exchange membrane between the hydrogen and the oxygen

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which only allows the proton to pass through leaving the electron behind this

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causes the electron to have massive fomo like you if you don't shop at LTD

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store.com so it will happily do the Sprint around a conductor to meet up

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with the hydrogen and oxygen creating electricity and powering the vehicle in

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the process the largest benefit of this is that hydrogen can be put into your

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car in just a couple of minutes through a process that is very similar to

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filling your car with gas but is this

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actually that easy there are two ways to

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store hydrogen liquid and compressed liquid hydrogen is nice because it's

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super easy to pump and easy to store a bunch of it no pressure vessel required

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unfortunately hydrogen becomes a liquid at -2

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22.8 de C getting that cold takes a lot

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of energy adding to the already high price liquid hydrogen is promising for

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use in planes and some trucks but for cars it's just too expensive and the

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general public does not want to deal with cryogenics instead what we have

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here is compressed hydrogen at 10,000 PSI which honestly sounds kind of freaky

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how is to fill your car with it Jee really hope this works out the

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last time we did this we were not very successful and a kind young M had to

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come over and show us how to do it the first thing you'll notice with these is

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that they're really cold and normally pretty wet this is a different connector

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than I used before maybe this one's easier oh wow it is if we knew what we

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were doing this was honestly really easy

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and here we go we've already pumped $5 which oh my God this is $16 per kilogram

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that's so much more expensive than the last one we had I guess that's why they

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give you the marai with like $155,000 gas card

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jeez connect okay this connector is awesome I like this one honestly at that

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station with that connector it was actually easier than gas really we have

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a full tank and we're good to go now

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while I've been filling the marai with a highly compressed highly flammable gas

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you've probably been thinking about the other time there was a bunch of hydrogen

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in one place fortunately I don't think that will happen here the high pressure

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is actually make the whole thing safer like think about it at a normal gas

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station pump if you want you can just go all Zoolander and spray gasoline

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everywhere but with compressed hydrogen it's really easy to detect if a leak is

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there by the pressure drop also hydrogen is super light so if the tank is

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ruptured instead of pooling under the car it just quickly depressurizes and

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all the gas floats away Toyota even has footage of one of these tanks getting

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shot like they lit a car on fire shot the tank and the footage is really

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boring they found that the tank depressurizes so fast the hydrogen

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doesn't even really have a chance to explode so that's nice hydrogen has

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another problem though and this is the point that critics will really try to

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hammer home it can never be as efficient as a battery electric car and on a price

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per kilometer basis it will always lose

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for a battery electric vehicle getting from generated power to your car moving

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is pretty simple the electricity is generated gets sent through the grid

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real efficient and then it goes you know into your car's battery some AC todc

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conversion there and the whole process is like 70 to 90% efficient depending on

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a couple of variables for hydrogen the

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process is more complex the cheapest way to produce it is by well burning a bunch

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of natural gas which kind of defeats the whole purpose this means electrolysis is

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preferred which is essentially the same process we use to get the marai to go

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except in reverse using electricity to turn water into oxygen and hydrogen that

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hydrogen then needs to be compressed which uses more energy and transported

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via pipe or truck to its final location

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then the final step taking that hydrogen and turning it back into electricity is

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only about 50% efficient with all of

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those steps you're looking at roughly 25

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35% efficiency total and since electricity is being used to make the

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hydrogen in the first place it will always cost more per kilometer than a

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battery electric car but battery electric vehicles have a problem physics

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at the end of the day f equals Ma so if you want to accelerate several tons of

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vehicle or tens of tons in this case

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you're going to use a lot of energy like

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sure they could fill this area with batteries instead of hydrogen tanks but

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then you're not only adding Mass but also greatly increasing the charge time

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and sure battery charging rates are going to improve and electric motors

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will become more efficient but it will never be able to beat this nozzle right

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here let's do some math so each one of

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these ports can transfer 60 G of hydrogen per second which works out to

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about 7.2 megaw of energy since

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efficiency is less than battery electric we can say it has an effective charging

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rate of 3.6 megaw to achieve that with

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an 800 volt battery like most Electric Vehicles use you would need 4400 amps

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unless you build a literal Power Station you cannot do that also the charging

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cable would have to be like this big

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using hydrogen for a truck has loads of other benefits too although most of

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these are shared with battery electric vehicles instead of 18 gears these only

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need two it has a Prius shifter wow

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there's way less vibrations and they create almost no noise also at the Port

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of truck drivers aren't allowed to idle well in que to reduce emissions which

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can result in some very toasty cabins in the summer and a hydrogen truck though

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they can just keep it running the whole time AC all day

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awesome for whatever reason people seem to think there can only be one winner

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hydrogen or battery electric but why not

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both I alluded that musk was wrong at the start of this video but AO Toyota

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has been just as bad in the next 10 years battery electric will be the clear

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winner even if the infrastructure isn't quite there people have electricity in

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their homes and for shorter Computing it just makes sense if the use case

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requires going over about 400 km

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regularly is for heavy vehicles or a

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vehicle that requires near constant use hydrogen is going to be the winner for

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me personally I think hydrogen vehicles are going to happen and the important

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question isn't if it will happen but how it happens here is the environmentalist

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piie in the sky pitch in the future almost all electricity is renewable so

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solar wind water and so on is what we use but the problem with these is that

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they don't output a consistent amount this means that there are times like

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right now where it's really freaking windy and a bunch of these windmills

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have the brakes on cuz there's more electricity Supply than demand instead

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of just applying the brakes we could convert that into hydrogen some of it

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can be turned back into electricity and what's left over is used to power

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our cars Wicked I love this

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future a more cynical take is that currently 90% of the world's hydrogen is

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produced through Steam methane Reformation process I mentioned earlier

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that's basically burning a bunch of natural gas creating loads of carbon

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dioxide in the process this could be excellent for oil producers since

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they're still able to make heaps of money off of you while you drive your

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zero emissions car pretty much the only thing that gives me hope this will end

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well is the Department of Energy's earthshot which is basically the US

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government putting $400 million a year behind the goal of making renewably

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sourced hydrogen available for $1 per kilogram by

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2031 if the earthshot and hydrogen

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trucks happen I think we'll be in pretty good shape currently if you're a massive

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industrial plant or whatever you are buying hydrogen in bulk you are not

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paying the $16 per kilogram we did if

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more hydrogen starts getting bought to power these trucks and cars the price

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will drop simply because of buying in bulk and the ability to produce hydrogen

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on location will likely be a huge benefit to many companies also helping

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bring the price down this all leaves us with one final question do you want to

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drive a hydrogen car like is the Mariah any

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good honestly me and Andy both really

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like it it's built on the same platform as the Lexus LS and it features wi

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quality that just does not exist in electric cars anywhere near this price

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point it's much lighter which means that they didn't have to really stiffen up

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the suspension so it can absorb all of the little bumps while not getting too

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wallowy over the big ones compared to a model 3 night and day it's also you know

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basically alus so seats are comfy driving positions good and it's even

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rewh drive to boot so it's kind of fun to Huck into Corners my biggest problem

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with the marai though is that it is

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slow let's look

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here it throttles from 0 to 60 in about

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9 seconds uh Toyota come on if your car is 50 Grand

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it should not be getting chopped by a base Civic like it might lead a lot of

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people to think that hydrogen cars are slow they don't have to be it's just an

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electric motor there's already a battery in here if you can't supply enough

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energy with the hydrogen you can just make it up with the

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battery Toyota says these weak electric motors were to allow them to hit their

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Target price point but frankly I think that's stupid this is never going to be

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a practical car you can only use it if you live in LA or San Francisco and why

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not just make it fun please just stick a Lexus badge on it give it 500 horsepower

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and price be damned this car is proof that hydrogen power works and is a

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genuine Marvel of engineering but no youngsters are putting it on their wall

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and I think that's a sin oh and at the start of this video I asked if you

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should buy one of these no absolutely not we're down in Orange County not even

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that far from LA and most of the hydrogen Stations don't have hydrogen

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there's a shortage or something so the couple that do are marai car meetups

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with like a dozen in line it took us like 40 minutes to get hydrogen last

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night oh it does pee though watch

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this it do it Stern it didn't you'll

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have to trust me anyway do you know who also pees a little bit our business team

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when they find out this is my Sego to our sponsor thanks freshbooks for

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Linus so huge thanks for watching this video we hope to do loads more on

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location car shoots like this one hope you liked it and if you want to watch

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something else maybe watch our xc40 review Toyota we saw your bz X4 in

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camouflage we want to actually try it please please it looks really cool