Thinking more of no. 2, there. Of course, while I don't know too much about the hydrogen, I know a little about the 5,000 psi tanks. The explosion risk doesn't scare me, as the tanks are completely unneffected by a .38 special at point blank.
I was merely pointing out that when the technology becomes readily available, there will be those who worry about blowing up in their cars.
Yeah, it's an issue. Getting the technology to work is one thing; getting people to buy in is an entirely different container of gumballs.