I guess here is the real problem. I think it's better to go after the real problem instead of trying to work around it.
Or, say, forced labor for the entire population. If people experience negative feelings while imprisoned, then maybe we should work on the real problem of those feelings, not challenge the nice neutral forced labor concept.
My point is that power over ordinary people generally corrupts, and the only real solution is to reduce and distribute that power so that individuals have more autonomy. Mass surveillance from AVs is a direct threat to your human autonomy.
Either let us watch the watchers, or don't let them watch.
That suggests one possibility would be to separate law enforcement agencies responsible for the management of automotive violations from law enforcement agencies for everything else.
Highway patrol + DMV enforcement arm for registration, safety, and moving violations. Normal police only have jurisdiction for vehicle stops for things like stolen vehicles or reckless endangerment.
Might solve a bunch of other civil liberty issues.
FAA and NTSB agencies aren't known for abuses of power. Local law enforcement, on the other hand, routinely abuse power (civil forfeiture, unwarranted traffic stops, racial profiling, police brutality, falsifying evidence, lying under oath, illegal search and seizure...).
Self driving cars should reduce accidents, because computers > monkey brains, so granting the police unrestricted access to data shouldn't impact safety improvements.