The amount of video and other data these vehicles will be collecting will be immense. You can bet governments will want it, both in individual cases and en masse. Governments will want to know where every car is or was, every moment. They will make license plate scanners totally obsolete.
They will want remote control capabilities. Whether or not vehicles can be started. Whether they will keep running or automatically pull over to the side of the road to await a police vehicle (or drive into the nearest police station, with the windows and doors locked?) if they believe a suspect is inside. Whether or not you can drive if you haven't been paying your bills or are having a legal dispute. They will want the ability to block all vehicles from areas where they don't want to be observed, and shoo all vehicles already there out of the area. This means individual and en masse remote control. Pretty powerful stuff.