They aren’t being towed to a repair shop, but hauled to a junk yard. You can see the hydraulic arm that lifted these onto the bed. Next he will strap them down securely.
I've seen junkyard flatbeds with one over the cab, two on the flatbed (not on top of each other) and one being towed behind. Saw one towing a large loader one time; apparently, the transmission wasn't getting cooled during the tow and it was smoking quite a bit.