I gesture to most 370Z owners (at least the ones that can see me) and usually get a response. But that's given that the Chicago community kind of knows each other more so than a random driver. Most female owners usually don't get it, excepting the owners here.
I was elated when a guy in a beautifully restored, orange 69 notchback took a good hard look, did this face:
then gave a thumbs up and smiled. I returned the favor.