I agree with mopar billy, don't drive any tow vehicle like you normally drive a car. Get in the right lane, drive slower, pay attention, no yakking with the others in the rig, don't draw the attention of the law. Remember, YOU are the idiot in the far left lane holding up everyone else, swerving and can't go fast enough to get around the other vehicle (like big trucks).
At the last race in MIR I was talking to a guy who had a 40 ft enclosed trailer and he said he got pulled over in Penn because he had triple axels, no lettering or ads, reason he was trying to sell it. He said he tows cars all over the country for other people and been seeing issues everywhere. Made me rethink buying one with living quarters, like he said, get a motor home and 2axel tag, but I guess they're next to go down.