The few times I've been stopped, the first question out of the cops' mouths have been, "Do you know why I stopped you?" I've always been able to answer "yes." This time, the question was never asked, nor the reason ever offered. It should be illegal to pull someone over for "no reason."
"Do you know why I pulled you over?" "Because you're hoping to get lucky."
You didn't have a load equalizing hitch on that I bet. We used to have a Ram van 2500 (tow capacity 8250#) hauling a 7000# Dutchmen. Semis passing would buffet it around, as well as suck us over toward them. The Ram 1500 p/u (cap. 7250#) pulling a 6000# Aerolite doesn't have the same aerodynamics, so passing or leading semis don't have near the same effect.