Good questions...
On page three of this thread with the photos, the pictured tow bar is black and shaped just like our Roadmaster Falcon towbar setup. Or it could be the Roadmaster Stowmaster. But ANY brand towbar mechanism is not to be backed up. These are expensive devices, running in the $500-1,000 range for just the tow bar. No matter what the brand. A towbar rated to tow an SUV is an expensive piece of complicated equipment and easily damaged and voids the warranty if backed up. Tow bars are only designed to pull in a forward motion, and not pushed in the backwards motion. These are not like a simple hitch and trailer set up with a tongue and ball.
I use the name *toad* not as a misspelling, but as a common RV term for a towed car on a towbar.
Some foolhardy novice RVers might try backing up a toad vehicle a few inches or feet, but later find out they ruined the tow bar, or even strained the steering mechanism of their car and damaged it by doing so.
(Perhaps why the car was seen driving *slowly* around in some of the posts mentioning that on the previous thread?)
To help the non-RVers reading this: Think of trying to back up a kid's toy wagon by pushing backwards on the handle, the wheels will not track straight back, it will swivel and kink and *jackknife*
It's not like backing up a straight tow trailer or boat, which have fixed axles. In contrast, a toad car has the swiveling front axle at the tires and they do not track straight backwards when being pushed. Thus the dangers and damages to the steering when trying to attempt this. And the towbar companies will not take any responsiblity for someone ruining their tow bar or car from backing up.
Hope that helps clarify my thoughts on why Mr. McCann might not have been the one driving that rig away from the pumps. The hard cut to the right also allows for dangerous back swing motion on the left rear side too. Another questionable move for an experienced trucker/RVer.