Would you put a GPS tracker in your car?

This is a little device that you can put in a hidden place in or on your car that will report back to you how your car has been driven and where it has been taken and for how long. It will report many other things as well depending on the model. These things are handy for keeping track of trips that you make and also for keeping track of your spouse or significant other. Would you use one?
Would you put a GPS tracker in your car?
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