Hey Ottawa Chap, as far as I know they are only installed in financed/leased cars for location/repo purposes. I can't see them putting them in cars paid in full; it just doesn’t make sense from a cost/privacy position. I mean, if you paid for the car in full, why would they have any interest in it anymore?
Regarding location/removal of the device, that’s an interesting question I don't have the answer to that one; I would suspect it's not an easy task and a breach of the loan/lease agreement given the purpose behind of the tracking device.