Laser For Bikes

 Laser For Bikes

No, this laser won't be able to mow down wayward motorists who don't give you way on the road, but instead it will shoot an elliptical beam around your bicycle, making you look larger than it really is, practically to the size of an average car. This is made possible by drawing an ellipse of light which is sensitive to virtually anything that crosses the perimeter - for example, when a car comes too close for comfort, the light will turn red while letting all the horns go off until the car backs off. The whole setup comprises of a quartet of adaptable pieces which can be connected via an auto adhesive tape, and they are a plastic case, a laser light, a distance sensor and a spherical head to adjust the light, three horns and a battery.

http://www.ubergizmo.com/15/archives/2009/06/laser_for_bikes.html