To be fair, i think it may have some use for fleet vehicles like taxis and long range buses because these are applications where being able to refill in minutes at a fuel depo you already run actually matters as compared to the stress you would put on a large battery fast charging day in day out. I also believe that Japan has a nuclear plant that is being built with the capacity to efficacy generate hydrogen directly. That being said, for personal vehicles I can’t really see the market of people who need that fast of a refil being large enough to reach the economies of scale necessary to be practical.
Afaik it has a higher energy density than common batteries, so it could be useful in things like aviation where this is the main concern and you can build special infrastructure to support it.
The frustrating thing is that a car running on hydrogen works really well, has a pretty long range and can be refueled quickly, so it looks like a good alternative. It’s only when you ask how that hydrogen was made and how it arrived at the refueling station that things start to fall appart.
