I have two hypotheses.<p>The tow company and the local Avis branch have some weird kickback scheme going on.<p>Or the tow company has illegally put trackers on known rental cars and then fetch them for a bounty.<p>Someone is clearly able to track the car, and I wouldn’t put it past a tow truck company to pull something sleezy like this in either situation. Don’t know how likely either situation is, but those are my top two guesses.