] Economically, hydrogen devices remain highly
] unattractive: "Fuel cells are very expensive," Romm said.
] "The demonstration vehicles all cost hundreds of
] thousands of dollars."

So do concept cars which eventually get made into production cars. Hell, so do Ferraris and Aston Martins, both of which are hitting peak production numbers and generating record profits for both companies.

Next?

Road to hydrogen cars may not be so clean