Semi-trucks are some of the longest, biggest, and heaviest vehicles on the roads. Semi-trucks — and here's what "semi" means on a semi-truck — are wide, averaging 8.5 feet, and can reach 70 to 80 feet ...
You pull into a rest stop where a bunch of truckers have parked their semis overnight. You watch with confusion as one of them comes around the back of a rig, metal pole in hand, and starts whacking ...