I was in the D.C. Area this week and saw a license plate that said "DST" on the expressway. I couldn't get any closer to see what it said, so I looked it up when I got home and found this:
http://dcplates.com/Organizational.htm
D.C. Offers plates customized for certain Greek organization! The crest was on there, too, and a 4 or 5 digit number. How cool is that???