Can you pull 33x your body weight?
Sam Noyoun can. Uphill no less.
A ha! Physics! Mechanical advantage says we can distribute the weight using pulleys and leverage our weight against that of the much heavier van. Our estimate says the VW bus weighs 5000 lbs, while Sam here weighs 150lbs (or about 33x's less).
You need a fulcrum - or in this case a tree. And a pulley - or a looped rope. The trick is in how you loop the rope over itself creating organic pulleys which cut the weight and create the mechanical advantage for Sam.