@etchedpixels @neil @artfulrobot @sborrill I've owned two 2006 model year vehicles with OnStar, and physically disconnected the OnStar boxes in both, though it became irrelevant when AMPS cellular went away.
People need to be aware that vehicle telematics systems can be used to spy on them even if they aren't paying for service.
Also, even without that, the "black box" functionality in cars records a lot about their driving. I'm not sure whether any record GPS data, but it wouldn't surprise me