I think I've done that.
Didn't manage to get it that far, though. I wonder how they did it.
The steering must have been a real problem.
I saw a guy in a 12 yard dump truck loaded with pea gravel raise his box without releasing the tailgate.
His load shifted to the back. That put too much pressure on the tailgate for it to open. With the center of gravity shifted, his front end came off the ground.
Was stuck. Big time. Funnier than hell.
Arf