Waving at drivers with particular vehicles helps establish a sort of camaraderie — an acknowledgment that both you and the waving stranger have the same excellent taste in cars.
For example:
Chevrolet Corvette
The wave is a sacred and required unwritten oath that applies to everyone who purchases a Chevrolet Corvette. The oath is agreed to upon the purchase of the vette with absolutely no exceptions. The wave states that while you are in your Corvette, you must signal any fellow Corvette drivers with a friendly (yet extremely manly) wave to acknowledge their presence and their fine taste in automobiles. Any driver who does not return the wave is a disgrace to the Corvette community.
Jeep Wrangler
An honor bestowed upon those drivers with the superior intelligence, taste, and class. Generally consists of either a raised hand waving or 4 fingers extended upward from the steering wheel, but may be modified to suit circumstances and locally accepted etiquette. Typically you will see one handed wave above windshield or outside body tub. During a blizzard, shiver and nod, hands may remain frozen to steering wheel. Keep in mind all Jeepers are responsible for upholding the tradition of the Wave. It seems that generally the Jeep wave is only practiced by Jeep owners driving the following Jeep vehicles; CJ, YJ, TJ, JK. All Jeepers are required to return the Wave even if it’s a Grand Cherokee or Compass. Do not EVER wave to Hummers, even…
Nissan Leaf is asking: How should electric car drivers wave at each other when they are passing on the street?
You have until the end of Thursday, July 28 to submit a photo of their suggested gesture to Facebook, after which Nissan will reveal which Leaf Wave for the 4000 Leafs users on American roads.