Just out of curiosity, electric cars produce movement through converting electrical energy into kinetic via magnetic field and magnets, etc; would it not be possible to convert the kinetic energy back into electrical energy while the car is moving. I know the Law of Conservation of Energy says that all sums of energy must be the same both before and after, but if a generator were to be placed to use the kinetic energy acting upon to car to convert it to electrical energy could you not convert most of the kinetic energy back into electrical energy while the car still moves. Sorry i dont know if ive explained it very well. Basically im asking unless the generator slowed the rotational force placed upon the axle down how come you cant double the energy?
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