Pressurized hydrogen is also dangerous, even more so than, say, pressurized natural gas, if only because it burns with no smoke and no real color to the flame. Lots of research is going into things like metal hydrides for storage, and I think some real progress is being made. I only follow this stuff in
Nature, though, so I may be seeing the academic side of the research that might never make it to an automobile.
I don't much care for the idea of 17-year-olds fuelling a car with H2 at 1900 psi while they're texting their friends, though. But hell, they do it with gasoline.