I once had a bunch of guys in a pickup truck pull over in front of me under an overpass and then peal out in front of me spraying dirt in my face. It always seems to me the close calls are with people in pickup trucks. Whats up with that? and no letters please, I use to drive a small pickup.
Now I carry a pen and a piece of paper in my saddlebag and if I get hassled I write down a license number, color, make and any useful information. I had a police officer say to me once, "I don't suppose you got the license number" to which I replied, "I sure did and the make and color too if you want it."