Police track down stolen car using GPS phone tracker - YouTube
How To Track A Car
California police to use Batman-like tracking device on bad guys
How Law Enforcement Use GPS Tracking
Court allows agents to secretly put GPS trackers on cars - CNN.com
The Marshall Project on Twitter: "Milwaukee police cars will soon be able to shoot GPS trackers onto fleeing cars. How it works: http://t.co/RBwENyRHA7 http://t.co/le8MtxzXkK" / Twitter
Are You Being Followed? How to Check Your Car for GPS Tracking Devices « Driving & Safety :: WonderHowTo
Virginia police routinely use secret GPS pings to track people's cell phones - Virginia Mercury
The High-Tech GPS Tracker That Is a "Game-Changer" for Police
Denver police can shoot cars with GPS trackers if they flee