Yeah, I thought he was just going to say "put the electricity directly in the car with a battery". All these conversions just don't make sense, if you have the electric power, just run the vehicle on it directly. People complain about the range of electric cars, but if your competition is a 3000 pound hydrogen tank you can put in a lot of batteries! ;-) Plus, from a carbon perspective, purely electric vehicles have high enough efficiency that it's a net carbon reduction over gas even if you run them with coal-based electricity.