Ok, I see some complaints of drivers with license plates on there (http://complainator.com/complaints/ce267cd9-3a35-4a00-9785-7...)
This is gonna sound wacky, but I recently had an idea for a site/mobile app that only did that. Let people report bad/unsafe driving with a license plate & picture.
The humanitarian in me would hope it would guilt people into being better drivers.
The greedy part of me would try and sell the data to the DMV or insurance companies.