Today I saw a convertible BMW -- quite a status symbol in its own right -- plus a sociological license plate to draw more attention to the car. The license plate said "Mr Single" -- apparently to announce the owner's availability. Driving a sporty and expensive BMW with a license plate that informs the world that you aren't married is rather interesting social behavior. I had my wife take a picture of me next to the car (just another fun Friday night out doing Sociology)!
Here's a link to a blog I recently wrote to explain what I mean by the phrase "sociological license plates":