I passed that accident just after they pulled the tire out of the window (saw the cops examining it). Reminded me of the time I lost a set of duallies off a straight truck back in the 70s. The wheel studs all sheared off. Mechanic claimed stress due to age (1963 model truck).
A fellow I know used to have a U-Haul franchise and his big complaint was what customers did to the equipment. He told us all kinds of stories about the damages customers did. I know he tried to keep the trucks,trailers etc in decent condition and had the u-haul mechanics in every couple of weeks bringing parts and doing bigger repairs. Some shops are more interested in rental numbers though.
Rob