The only person who's ever waved at me in the NB was a guy in a Passat a few weeks ago. The aircooled drivers seem to be more into the community thing; they wave when I'm driving my classic. Something I've noticed, though, an awful lot of the people driving nice or niche cars -- Corvettes, Mini-Coopers, things like that -- check out my car, and wave back if I give them one.

It's just almost never other people in New Beetles for some reason.
