That is not what is going on here. When he loaded the tractor, the weight at the rear unloaded the rear tires, and there was nothing to stop any of it.
I agree, a friend and I done the same thing when we were younger, 2wd truck on a slight grade.
Unloading a Scout, it lifted the rear wheels on the truck, the truck took off like a bullet right towards his parents new camping trailer.
We managed some how to get the steering wheel turned, thru the window with the truck moving, and just missed the camper.
