Sneaky speed bumps actually power supermarket's check out

greenbiz.com — Saintsbury's has installed "Kinetic Road Plates" at the supermarket giant's new store in Gloucester, U.K. The new technology harnesses enough energy from vehicles driving in and out of the store's car park to power all the store's check outs. The kinetic energy system is just one of a raft of environmental technologies featured at the new store.