We can't let other vehicle drivers steal our fun. I have an H3 and have only seen a couple negative people, but still I really enjoy the fact that I can piss people off just by driving by them. Plus, once someone flips you off... you no longer have to treat them like most of the other drivers on the road...you can scare them, take whatever anger you have out on them, laugh or just try to confuse them!
How many times are you justified backing up at a stop light until the guy behind you moves because he knows he is going to eat your trailer hitch? Never, unless they flipped you off.
