Last night I heard on the radio that the world's first commuter driving a hydrogen-powered vehicle is navigating the roads near Los Angeles with a Honda.
Says it has a thick-walled bottle (much like propane, I imagine).
He can get about 160 miles on a tankfull, has a charging unit at home and there's one along his route to work.
It appears that they contacted a number of people on their list who'd used multi-fuelled vehicles, previously, then decided that he should be the one chosen to try it for daily use.
He's very pleased with it.
Sounds like a great idea.