It is a shame that generating free hydrogen is so ludicrously expensive and lets not forget the high cost of concentrating into an almost practical density. Then there is the entirely new infrastructure to build. What were converting to hydrogen to do again?

i'm very skeptical of this new approach. many of the car companies appear hopeful though. i think it would make more sense to have a charger in the floor and a battery vehicle with good range. you just pull in at home and the car charges automagically. no more stops at fueling stations except for long trips.

New Silcon Nickle hydrogen / oxygen water splitting catalyst whereupon lasts for ages has now been discovered and thus the hydrogen fuel age has arrived. Good work and well done all you hydrogen tech developers.

What concerns me about this is that car companies will look to perpetuate the stranglehold of big oil companies - who else has the distribution network to provide liquid hydrogen at geographically diverse locations?
What would be better for society would be rapid chargeable cars which could just be plugged into any electricity outlet.

Why make hydrogen and use it all in a fuel cell? Split the water in the garage and save a little hydrogen to combine with some of that oxygen to run a generator in the car to split more water for extra range. As an alternative, some countries' cars use a 2nd storage unit with LPG or CNG - Liquified Petroleum Gas or Compressed Natural Gas - to run normal I/C engines, starting on petrol for a few seconds and then switching over seamlessly to the other fuel system. .Takes virtually the same time to 'fill' the car's 2nd tank, mileage is good, service stations need a less engineered storage tank and there you are!

There is much development in making hydrogen and fuel cells less expensive. With the only exhaust being water vapor, it is - IMO - greener way to get around. Now - with these fuel cell vehicles - a cooler way to get around.

The BMW I3 has a 25kW range extender - why would a fuel cell need to be 100kW. Surely the price would go down with a fuel cell at 50kW or lower. Both the I3 and the Hyundai use the battery pack for acceleration so not that much is needed for constant speed.

What happened to methane fuel cells - there is existing infrastructure with gas already being available at some garages and methane can be produced as an off gas from decomposing wastes - so no expensive hydrogen generation - okay generates co2 but this is still a lot less polluting than the methane being used - I guess it all about that zero emissions - still wonder when you balance the Hydrogen production which is lower.

I will say I am fanatic for hydrogen fuel cells technology, the problem is how to get very easy and cheap hydrogen, there is one way: the US has now so much and cheap natural gas which can be splited in 4 molecules of hydrogen and one molecule carbon as carbon black by product wich can be used for the fuel cells manufacturing. The spliting process is with a vacum plasma reactor or microwave plasma reactor which the NG (H4C) is converted in 2H2 + C, this process is cheap, so there we can get a very cheap hydrogen without a complicated hydrogen stations, becouse in this stations will have a reactor, a hydrogen compresor and a carbon black changeable container, the electricity power will get with a own hydrogen fuel cell.

For all this complex technology, it seems the Chinese electric bullet trains provide a great deal of very inexpensive transportation?