Okay I'm probably way out of my league here because in only 17 and this is my first post, but I was wondering about a self-sufficient car. I know putting a wind turbine on an automobile adds resistance which negates effect. However, a wind turbine builds energy just by spinning, and an automobile has 4 spinning wheels (2 axles). What if we could use the same mechanics of a wind turbine on any "extra wheels" which would build up energy without adding air resistance. And if we could design a car with many extra wheels it could build up enough energy to self sustain. I'm sure there's probably some obvious rule that doesn't let you do this but I've just been wondering about it for quite some time.