I saw this article on cnn about a new light
The laser light that could cut cyclist deaths - CNN.com

It's a light that projects a green image of a bike on the ground (in front of the rider). It's meant for road riding obviously. The idea is that it alerts drivers who are about to turn in front of you.

The Blaze - Laser Projection Light (Road light)-130912121102-blaze-bike-light-horizontal-gallery.jpg