My problem with hydrogen is that it solves one problem with EVs - fast refuelling at dedicated locations - at the expense of pretty much every other aspect.
Just the economics of it don't seem to add up. From power generation to the wheels of your car, hydrogen is less than half as efficient. So assuming you have a hydrogen pump and a supercharger next to each other, the hydrogen is going to be at least double the cost per mile. I say at least, because a super charger costs in the tens of thousands of pounds range to install, whereas the hydrogen pump costs over a million.
Hydrogen had billions of dollars chucked at it in the US in the 2000s before anyone had shown that EVs could work for anything with more performance than a milk float, so it was given a chance. Perhaps the money just came at the wrong time, but I think more than that the problem was that the transition was too hard to make.
That's not to say I think it has no use. I think that it could well be used for HGVs, buses, small generators, excess power storage, but I think there's a reason there's no 'Hydrogen Cars' thread on this forum.
