California - Electronic Auto License Plates

I don't know why this concept never occurred to me, but the great state of California is looking to try out electronic vehicle license plates to replace the traditional ones. The "plates" will be a screen that is able to display information (such as if the plates have expired), and no doubt at some point they will throw GPS capability in there if it takes off because that's what everyone wants - to be trackable at all times, right? Right?
Not surprisingly, though, privacy concerns abound. After all, if the state’s authorities can send and receive data to your digital license plate, then they have to know where you are. That would make the use of the increasingly ubiquitous license plate readers completely irrelevant—law enforcement likely would be able to either directly access location data in real-time and/or get historical travel data.