[gnerd]

I think the real interesting thing about this isn't any of these questions but really, much like with the internet, when does an IP become a person (or in this example, when does a license plate become a person)?

Is there a legal distinction? As I understood it, the reason you don't lose points on your license if you get caught by a speed camera in an automated fashion, is because technically, legally, they have to prove it was you in the car (but to charge a fine, they just have to prove it was your car and it violated a traffic law).

So if you think of it in that context, then how can I be sure it was you at all for those "sensitive" situations? If I can't be sure it was you, and the information was public (where you had no expectation of privacy in the first place), then is that information as protected as say, your medical records? (No really, I'm asking).

[Crito]

Many of the people that you could conceivably want to be protected from would not particularly care about the possibility of the car being driven by other people. Furthermore, in many situations, it is likely that the GPS-tagged data could be combined with other data, such as employment history, to greatly disambiguate the actual driver of the car at the time.