Rudely replying to my own post.
We don't even need to rely on the government database. Web cams in private cars feeding data to REST service at an aggregating website, maybe with a Raspberry Pi onboard to do some preprocessing....
Excuse me, I have some hacking to do.
On Tuesday, "Duke Nukem Forever" publisher 2K Games fired its PR agency for threatening to blacklist journalists who gave the game a negative review. "2K Games does not endorse the comments made by Jim Redner and we can confirm that The Redner Group no longer represents our products," 2K Games spokesman Charlie Sinhaseni said in an email. "We have always maintained a mutually respectful working relationship with the press and do not condone his actions in any way."
Marvelous! The super-user's going to boot me! What a finely tuned response to the situation!