[GpsFrontier]

The generator is only a backup, they get 92% of there electricity from the solar and wind. The vegetable oil is recycled, otherwise it would probably wind up in a land fill, also the generator doesn't put out carbon emissions. The paddle wheel idea is a good one, although the water would need to be moving like in a river or stream, but would be quite useful in some locations (even if the flowing water is in a different location). The water under the boat is quite still in the bay where it's docked at the moment. And Yes the idea is to teach people about the technology's and have gardens on roof-tops (and other places), the barge idea was intended to allow the whole prototype to be moved from city to city, in order to educate people all over with it.