For a glimpse into the future check out this article in the EE Times. It describes a sensor system that includes a camera, LIDAR and the analysis unit all in one package for advanced driver assistant systems. The unit would mount on the windshield as part of the rear view mirror.
Here’s the catch, full scale production is not scheduled until 2015. I can imagine this technology being mandated, much like the airbag. This is the consumer app for LiDAR.