Why can they put a wind turbine on the car, and use it to recharge the battery, and drive the car for free?
If you’re talking about using wind generated by the car’s motion when driving, then you are getting back into the perpetual motion problem: all that energy came from the batteries to begin with. To charge themselves, they would have to output more energy than they take in. No battery can do that. If you’re talking about a wind turbine that would charge the car while it’s sitting parked, then you are back to the same problem that solar panels have, because it wouldn’t collect enough wind power to do anything useful.
