One of the main downsides of electric vehicles is the restricted capacity of their batteries. If they’re going to meet range expectations of people used to gas-powered vehicles, they have to be bigger and heavier, which there currently isn’t any space for. Researchers, however, believe turning the very body of a car into a battery could do the trick. If a vehicle shell could collect, conduct and store energy, it could reduce the weight of the car up to 50 percent. So far, studies have shown that carbon fiber shells could serve as battery electrodes.