So do taxis, and any other car with driver assistance (though those don't save the video, they just watch if your hands are on the wheel.)
That’s opt-in, at least in the US, and for the moment.
(Just curious) what features become unavailable when you opt out? Or in other words, why would anyone opt in?
I didn’t look too closely, since I just wanted to make sure it was off, but iirc they said they only upload the footage around the time of a crash to see how effective the safety systems were, and to get a sense of what to improve”. Basically one of those “please waive your privacy in the name of science” types of deals. Didn’t dig through any privacy policies, though, I’m sure Googling will yield a better answer.