One of the many reasons electric cars have potential to have a large impact on the environment is the fact that while the car brakes, energy is put back into the batteries through a “generator” in the braking system. In order to work this “generator” must slow the car. It is very scientifically done and is an engineering and environmental marvel. It can also be dangerous if it slows the car too much since in some instances the brake lights do not come on while the car is slowing since the brake pedal is not being applied. It can be like travelling behind a car without functioning taillights. Some of these cars are set so the “generators” will slow the car considerably. Some car owners state that you can almost operate the vehicle without the brake since the “generator” slows the car considerably once you take your foot off the accelerator.
Conscientious car manufacturers have taken the step of causing the brake lights to illuminate when the operator removes their foot from the accelerator if the car will slow considerably due to this energy recapture. If you are in the market for one of the vehicles, please be sure to ask about this feature. It may be a safety option available for purchase until governments mandate its use. If you are operating behind one of these vehicles be extra careful and perhaps leave extra room.