I got to drive a pre-production hydrogen fuel cell vehicle (Toyota Mirai (it means future)) around San Francisco, briefly, today. The required infrastructure isn't really in place yet, and Elon Musk has said why are we even having this conversation (wrt. Electric vs hydrogen powered cars) but still cool nonetheless. TCO doesn't make sense for me but it does get you a white HOV Lane sticker. P.S. don't mention the Hindenburg