Is there anything we can do about it short of avoiding new cars? Our legislators have proven unwilling to pass real privacy laws.
Yes - remove the telematics radio and GPS antennas. They are usually in the overhead console area around/behind the lighting and mirror controls.
In BMWs, the gps antenna is behind the upper lights, the telematics and V2V antenna is in the sharkfin(unplug it from underneath the headliner)
Maybe there is a way to pollute the data? At least it makes data cleaning more expensive.
Moving to the EU becomes a more appealing option every day.
In my BYD Seal, I removed the SIM card that's easily accessible from inside the armrest compartment.