When it was created, this was true. However, now cars have systems that log just about everything you do and send it to the manufacturer, who then sells it on to insurance, ICE, anyone with money.
So it started off ok, but now I would imagine that if your car has a sensor, it is reporting data back to that central telemetry unit which is sending it up up and away.
Massage tables have a hole in them, but the people that work there get all grouchy when I use them as such.