That's a kinda slow wave don't you think? Besides the fact that it's only possible being in front of one another...

 

In order to be a gangsta you have to drive an old hoopty ex. 1980 buick with two subs in the back that cost more than twice the amount your car is worth. That way you can drive (err no, drive isn't quite the right word, hmmm... vibrate yes). That way you can Vibrate down the street listening to great hits like BRRRRRR and MMMMMM. Just remember to tighten up the bolts every time you get home. That way your car doesn't fall apart.

Now on to the topic.

I use to wave when I drove the Firebird. They were kinda rare around here, and yes I do wave now to other crossfire owners even when I'm not driving my crossfire (when I catch myself doing this I feel kinda stupid though). Its more of a Hey, and not a Hey Look at me I'm a Crossfire Driver too!!! LOL

 

And don't forget the 20+ inch chrome wheels with rubber bands on that old Buick... LOL

I wave at many sports cars... I get many back... no #1s at me yet... so I must be doing something right... or passing them too fast to see it.

I have waved at the two Crossfires I've seen... but I don't think they saw me in time... oh well. I'll keep trying!

 

I usually raise my hand slightly off the handle bar when I'm riding my motorcycle, both hands have to stay on the bar here in MI with all the damn pot holes and people using their cell phones or doing something else beside paying attention to their driving... Anyway, I don't know if you can call it a wave, its more like a polite recognition of a fellow rider regardless of the type of bike he or she is riding (More like a brotherhood).
Now when it comes to the XF, I only wave if I'm being waved at, unless of course its a she XF driver...