Actually, when I had my Honda CRX I'd get honked and waved at by other CRX drivers all the time. It's also true for older VW drivers.

So the answer is yes.

I guess if you drive or ride something that is in anyway a community or cult-ish than you will get recognized by other members. My bike is my primary vehicle, and I've found others that are in that status (who are also riding beater/clunkers) are far more courteous and are more likely to lend a helping hand than someone riding a $4000 bike with his little camelpak and spandex.

Vincent