What does your username mean?

[Q]

QQQQQQ is my license plate number here in GA.
(I'll be getting plate # 1234567 any day now, but I'll keep my username the same.)

[Q]

I don't really have a good answer.  I guess I just like the letter Q.  It looks kinda wierd and just seems mysterious.  It can never stand alone; always dependent on the U.  And most states don't use Q (or I or O) on their license plates.  By the way, I'm a license plate collector, so perhaps that explains my attention to such things.