TL;DR: Dealership installs GPS-based anti-theft device which is not active unless you pay for a subscription. Car is transferred to a different dealership who

TL;DR: Dealership installs GPS-based anti-theft device which is not active unless you pay for a subscription. Car is transferred to a different dealership who knows nothing about this whereupon it is sold to a customer who happens to be an EFF supporter. 29,000 miles later a mechanic discovers the device during routine maintenance. Hijinks ensue but it turns out to be much ado about nothing.