[mikeash]

I saw one on the road the other day that was basically that xkcd license plate, a mix of I and 1. I'm sure that even if they aren't already known to the local police, the license plate search system is smart enough to handle it.

[viraptor]

I hope it is. If you try to remember the plates of some car driving off, you'll most likely going to remember the first couple letters and maybe what colour it was. They really should have a way to deal with queries like that.