[schmookeeg]

If my former Honda Civic NG's natural gas tank could be filled at the same pressures of the Toyota Mirai's Hydrogen tank, my civic would have gotten ~950 miles to a fill. (3600psi vs IIRC 10,000psi). I assume there's a chemistry reason they're not comparable.

I also have to assume the DOT approvals ensure some safety in both (although the pressures are a lot to contemplate in either car) -- there have been NG crashes where the car was consumed by fire, but the tank did not explode/rupture. They're stout and well-considered things. I don't think the H2 storage in the Mirai (and whatever the Hyundai one was called) is the problem. I think lack of access to filling stations is the problem. I've owned 2 NG Civics and while NG stations were in oddball locations, they were available.

I thought the Mirai was a cool car, especially the second gen. Now they're... what, very expensive doorstops? Super unfortunate! I hope Toyota do right by their early-adopters. I don't expect Hyundai gives a rip, but they could surprise me also.