I have been a Wrangler owner for a whole three weeks and have recently noticed that some other Wrangler drivers wave (extend the fingers of the hand on the wheel w/o taking the hand off) as we pass each other? Have I unknowingly become a member of an elite club or brotherhood? If so, is there a handbook or etiquette guide? Am I supposed to wave at all jeeps or just Wranglers? And if just Wranglers, does that include the four-door models? I'm so confused!!!