just imagine passing a car on the left side and your laser projectiong into the drivers eyes.

This still seems like a terrible idea. First off, the driver's going to be looking at that the erratic bouncing green laser line on the road, not the cyclist. Secondly, the laser projection is pretty dulled each time it has ambient light on it, which will happen with every passing car's headlights. And then there's the issue of reflection from puddles, trash - like potato chip bags and the like - and quartz used in many asphalts; what a sure way to get a driver to hit you - blind them momentarily with fucking lasers. I just can't see this working, especially when there are flashing, attention-getting lights that bring attention to the rider and not the road while saying to drivers "oh look at that cyclist! I won't hit him!"