prototype? are you kidding?
They are fully tested and operational everywhere, car buses trucks, submarines, megawatts electric generators etc etc ALL FROM FUEL CELL
Problem is OIL COMPANIES and company, they don't like the idea. Therefore
1.- the Hydrogen to supply the fuel cell is not available everywhere,
2.- the cost of the fully elctric vehicle, EV is very expensive as of today, production is a very small scale as there is no demand.
SO they are manupilating to control hydrogen supply, which is going to be very dificult unless they get the goverment to do just like iit did with alcohol/whisky production, controlled. With mr. Bush in power that is given.
So the precursor is the H2ICE vehicle, (hydrogen internal combustin engine), the same old crap only to run on different fuel, hydrogen.
You can buy one from Ford Motors (Focus model) right now and used in the california "hydrogen highway" and some other places where gasoline xxx i mean hydrogen pump station have been installed.
the "outfit" in "COLORADO" is promising to be able to convert (fleet conversion) your vehicle from gasoline to hydrogen, NOT FUEL CELL. As it is right now they dont seem to be too serious with the proposal.
Can you find out who they are?