Since almost every new vehicle is equipped with either wifi or cellular builtin today, or both, not to mention mapping and location schemes both hardware and software, tracking any vehicle at anytime is not problematic. Even when the antenna is removed from the vehicle, wifi and cellular connections are turned off, sensor chips are still active elsewhere in the vehicle, and truly sensitive equipment in planes, helicopters and satellites can track them by serial #'s. License plates are relatively moot today. More a scheme for state fees than identification of vehicles. New police scanners can id vehicles by their keyless entry system serial #'s from more than 2 miles away. Some can even control locking systems and engine performance. As technology marches on, identification of vehicles and control thereof will only increase in capability. Two years ago my then 12 year old grandson showed me how to unlock my Caddy and start the engine, while we were in my living room, with his smart phone. My 2011 Caddy has keyless entry and remote engine start. His smartphone had software that scanned the remote fob in my pocket, and had greater performance range than my remote. He then showed me other software in his phone, having now id'd my lock system, which could use Find My Phone software from Apple to track my car at all times. He had other schemes for Android, Garmin, Google Maps, and so on.
Don't be that concerned about police, government, or big corporations tracking you. Worry about 12 year olds seeking to make you crazy as they giggle maniacally.