I think that’s what I was actually thinking of but I mixed it up.

I read an article once about a guy who got a NO PLATE licence plate and ended up being automatically blamed whenever a cop wrote in that a car had no licence plate. I wonder what 0X00000 would do.

You can have non-alphanumeric characters on license plates? What do the cops do if they need to catch you? Do they put out an APB for emoticons?