Hey, (yeah, I'm back, and you'll find my questions as strange as ever), needless to say I've got a question. Supposing I could get free or very cheap appliances (AC, unfortunately, but cheap) to put in a bus for five or so people to drive around the continent...how could I get a small power system set up inside a midsized ex-school bus capable of devilering the needed energy for free? I mean, the obvious answer is to use the engine as a generator, but it just seems like that would be terribly inefficient and a waste of possibly hard to replenish fuel. Solar is out of the question because of expense, and a small wind turbine would only be able to be used when we are stopped, yes? I'm not sure about using one while moving, it seems like it would dramatically lessen fuel mileage by doing so...plus wind turbines, even small, are still a bit expensive and won't deliver much power. I was wondering if anybody has ever heard of a small passive solar water turbine whereby the sun is concentrated on a small amount of water, vapourizes it, turning a turbine, and then it condenses back down to do it again. I've been told that they aren't very expensive, but not much else, and I'm not sure how much power it could possibly generate. Am I better off going with charging batteries off the engine? I'll probably still need an inverter, which will be expensive... We'll most likely just have a few lights; a refrigerator; an air conditioner; plus some smaller things that probably don't need to be mentioned because all of this won't be running at the same time; a few speakers on the radio; and maybe a computer. Added up, that's quite a bit of energy to supply. Should I just buy some fully charged batteries before going and recharge as necessary en route via the engine? What equipment would I need to do that, and how expensive is it?