In my travels as a Harley-Davidson owner I've done it, and I have seen Corvette owners do it also...they wave at each other. Whether it's the Harley "two fingers down" or the Corvette "steering wheel wave" they are a family of sorts and always acknowledge that.
Why don't other RVers wave back? I always throw up a wave and never get one back. Why?? We're the same type of family as the other owner groups right? I always enjoyed that friendly connection with someone else sharing my love for a certain sport or vehicle.
Maybe we can start a Wave Revolution right here on FRF! Just maybe...
So if you see a big black GMC van pulling a cocoa brown Rockwood-expect a wave from BiigDaddy because I'm starting it.