via npr.org
When Yasir Afifi took his car in for an oil change, his mechanic found an unusual wire hanging from below. It was part of a black rectangular device attached to his car by a magnet. After posting photos of it on an online forum, where posters identified it as a GPS tracking device, Afifi, a Santa Clara, Calif., college student and computer salesman, got a visit from FBI agents demanding their equipment back.