Wind turbines, although green for the most part, don't produce nearly enough energy for even a small area. Solar power on the other hand could power a hell of a lot, but the problem arises with battery technology. Hydro power generates more then enough and is clean in the long run, but devastates huge areas of land initially.
A good source of energy would be nuclear. With todays technology in nuclear power plants, they are probably some of the safest buildings on earth, plus they are quite clean.
Also that idea for a car, although it looks good talking about it, wouldn't be all you crack it up to be. You'd go just as far in that as anything else, for just as much fuel.
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