My point is, that the power required to charge the car's "battery" doesn't come from infinity. Electricity can only transfer power; it can not amplify it. You charge up the battery, and the power is stored and used to run the car. The reason why fossil fuel powered cars are more cost-efficient is that you get more energy out than you put in. A tiny spark from the spark plug sets off an explosion (a small one, but there are many). There is no dispute in environmental friendliness or of replenishable resources, but fuel-powered motors are the most cost/energy efficient. And Darwin, about the gas motor charging the electric one... That's just plain silly. First, it doesn't eliminate the need for a fossil fuel engine, like we are questing after, and second, it's like filling up your water glass by filling another glass with water, then pouring it into your original. We can just use the one that has the water in it. And, following my analogy, water will always be left over in the glass that you poured from, so it's even less efficient.