The HUD GPS Speed Meter is made by GlobalTop and has a GPS receiver inside with a screen on the top which shines your current speed on to the windscreen of your car. It also has Bluetooth built in also. By projecting speed and heading on to the windscreen it allows the driver to keep his eyes on the road. The Bluetooth part of the device allows you to connect it to a PDA and use the GPS features on sat nav software such as TomTom.
Via: Gadget