[Mark17]

the potential of Hyrdogen fueled transportation.

Didn't the Brits use this during WW 11 on their double decker busses? If so, I gues it really isn't new.

[good_ash]

It's been used for a while, however the issue is the storage of the hydrogen - how to compress it and get enough storage to make it feasible for everyday use by the average joe. Right now it's like electic powered vehicles - pretty useful if you have a centralized fleet that only travels in a limited area, and then can come back for refueling at a central location. But the costs also make it prohibitive to adopt fleet wide.

IIRC, one of the more promising storage ideas was a honeycombed carbon fuel tank. My memory of the show is a little fuzzy, but I recall they mentioned the possibility of some hydrogen powered cars going 1000 or miles between refills.