I know that you can be in Los Angeles, they can put your face in the system, and they will spot you in New York City or Miami, just based on that. I heard that all license plates (I am not sure if all) are getting recorded / tracked (see cameras on the intersections of the streets, and not only).
Random intersection LA
I think that there is software, which is able to recognize unusual patters in movement of cars, or something like that. I know it is all pretty advanced in the USA.