Yeah, right...how many horsepower is your car again? And how much horsepower does your nano technology provide? Hint: It ain't enough. In fact, it is probably thousands of times too small.
The technology must be able to provide a lot of horsepower, for operating the car and for running the accessories. Energy lost out the headlights cannot be recovered, for example.
I'm not going to believe anything that simply is impossible due to the laws of science. They are called laws for a reason - they cannot be disproven.