A supermarket in England is setting up a high-tech parking lot that'll generate energy from cars driving on it. The free juice will power the cash registers and lights inside the store.

The system will work via a series of plates that, when driven over, will create a rocking motion underground which turns generators. As more cars drive over it, more energy is generated, about 30kw of energy an hour. It's a smart idea, and we'll have to wait and see if it catches on elsewhere.

Via Daily Mail