alt Hacker NewsYes but Americans commonly tow massive fifth wheels at over 120 kph (regardless of tire rating and including up and down steep grades, transmission and brakes be damned) because why wouldn't you, and the sum total of the training they receive for operating such rigs in this manner is a rubber stamp at the DMV.
Some of the "fifth wheel" setups they have in the US are terrifying too.
Over here a "fifth wheel" coupling is a massive horseshoe-shaped plate that sits on the back of an artic tractor and is rated for some unholy loading and drawbar pull.
Over there it looks very much like a standard 50mm towball welded to the end of a metre or so of scaff tube sticking up from the floor of a pickup.
I used to do auto electrics for a guy who imported American cars to the UK and I was always amazed at just how janky the towing setups often were. It's no wonder people think they need a huge heavy truck when the towball is just bolted to thin sheet metal.