I think that the people who are afraid of "Big Brother" tracking them but support computer driven cars might be a little confused. What is to keep your car from being used as a law-enforcement tool? Maybe the car-computer receives an update that a crime just occurred in the area you are in. You enter your car after running your errand, the doors automatically lock and you are whisked away to the police for questioning (or just detained till they can get to you).
btw A lot of the camera systems have a camera to photograph the driver as well as one to record the license plate. That way you know whose ass to take that fine out of.