HitchCam - Cameras for Cars
I saw an SUV the other day with a bumper sticker that said "HitchCam". Curious, I checked out his hitch, which had a nice metal finish with a black dot in the middle. Impressed to see such a sleek job, I waved from my cameraless car, and when I got home I found the website.
HitchCam describes itself as "Forward Thinking for Reverse Driving", which they do a pretty good job at. All their products are "Vehicle Rear Vision Systems", and they do it in several different places. The first, which I saw on the road was their HitchCam, but they also sell a wide angle "FrameCam", an "H-Cam" aimed at the GM Hummer H2, and the UniCam, a wide angle camera that's designed to be mounted in the car's body somewhere.
If your interested in this kind of thing, you may want to check out a display called VISOR (warning -annoying flash), which is designed to go in the place of your vanity mirror. Never considered putting a display there.