I saw this at a KOA across from work yesterday. I thought the truck was just parked near the 5th wheel trailer. I walked over to take a look at the truck and about shit when I realized it was pulling the trailer. He is traveling from BC Canada down to the southern states across to the east coast, back up into Eastern Canada and back across to BC. It took him 17 months to build, Mustang II front w/11" chevy rotors, 9" rear, boxed frame, parallel leafs, air bags, 302 sbf. Here are a few pics, (cell phone = shitty).
You didn't see the ropes attached? The passenger climbs to the back and starts throwing them under the tires when they head down the backside of a mountain. My Uncle did that when his old truck died on a hill. It didn't stop the truck, but before he got to the bottom, the truck bed was cleared out for the first time in years.