cross-posted from: https://piefed.world/c/tech/p/1432229/your-car-is-a-smartphone-on-wheels-a-team-of-researchers-tested-21-vehicles-and-found-th
Data sent by vehicles and companion apps included locations, VINs, and other identifiers. Amazon, Google, Meta, and Microsoft were among the top receivers of driver data.
In many cars, the modem that phones home with your data may be a separate unit. Depending on your make and model, you can sometimes buy cable adapters that will connect power to everything except that subsystem. The term to search for is a “DCM bypass plug”.