Licence plates are not supposed to be used for that purpose. They're not supposed to be used to track you coming and going. That's how surveillance and tracking grow enormously.
I have a quick, funny story. Steve Jobs, who, of course, was the creator of Apple, used to buy a new white Mercedes every six months less a day. Then he would take it in and buy the new model of exactly the same thing. Why? Because at that time in California you didn't have to have a licence plate on your car. You had six months after you bought a new car. He didn't want to be tracked. So six months minus a day, he took it in, bought another one, and that continued.
That's just to give you an example. People do not want to be tracked. That's not the purpose of licence plate numbers. We have to return the uses of personal information to the purposes for which they were intended. That's the goal.