I tend to look at the tiny stickers on the windows to catch a glimpse of the type of person ahead of me in traffic.
I see the family stickers you know the ones man, wife, kids and dog/cats.
Military ones are good too as well as sports stickers.
There is an occasional LBGT or rainbow one from time to time.
I get a kick out of some of the funny ones too.
Have yet to see any correlating to TG or being a CD. Even a male/female gender (circle and arrow or circle and cross).
I have my fave college sports logo which was pink but now faded to white and a cute Hello Kitty with a bit of a twist.
What have you got on your cars/trucks?