Electric vehicles are powered by batteries, and the wheels rotate forward to do work. This "work" is used to drive the generator (the generator consumes energy) and then converted into electric energy to drive the wheels. If there is no loss and the efficiency reaches 100%, it becomes a "perpetual motion machine", and the car can move forward forever without charging or consuming energy. You will solve the problem of the world energy crisis and win the Nobel Prize.
However, it is impossible in theory, and it will not work in practice.