Insurance frauds would target those vehicles.

"Caution, this car is recording massive amounts of data and will have the entire car makers legal department behind it in case of a crash"

Would they? I imagine those cars would be almost guaranteed to record the entire encounter.

I hope that if we do end up with most/many cars recording everything (with several sensors) we will at least get a “report reckless driver” button that will send the recording to highway patrol and be allowed as evidence.

So the new colour would let you know the car will move in entirely predictable ways based on billions of km driven, unlike the cars driven by crazy humans