Why bother tracking just the cars? Just track every person. When you're born some government agent can implant a tracker in your sphincter. When a car is stolen, they arrest everyone in the area where the crime occurred and then sort it out downtown.

If you've got nothing to hide, then you shouldn't object to having a sphincter implant to track your every movement. And if you happen to be in an area during a crime, you'll certainly be vindicated, so just a little inconvenience in order to ensure that no car will ever be stolen again.

And just think how environmentally friendly that'll be. Maybe people will stop having so many babies to protect their sphincters from being implanted. That'll be super good for the environment.