Are you the type of person who love to show off, especially when it comes to speed? Well if you do, grab one of this Speed vest, a device that will let everyone know how fast you’re going with your bike. Equipped with electroluminescent wiring on the back and wheel speed sensor, it displays a bright numeric readout that states just how fast you’re moving in no uncertain terms. The vest runs on a 9-volt battery for six hours of use. [Mykle]
