One of my favorite stories was the one of poor Mary Ellen Cumins. I don't remember which university she went to, but the e-mail addresses students get are the first five letters of the last name, followed by the first and middle initial. That made her e-mail address "cuminme."
Leslie, wouldn't the license plate be put on the back of the car, and not the front? In that case, there'd have to be a front view mirror in the back of the car, and you'd have to turn your head while driving and look in the front view mirror to see the message... and that'd be kinda... retarded... to risk your life and the lives of those around you just to see what someone's license plate looks like backwards.