Thanks Bionic Man for the link.
I visited the PullRite web site and looked at the owners manual to see what kind of mechanical things are going on to get this to work. Well... there are a lot. As promising as this looks, the maintenance schedule is grueling. Every day of use you must lube the plastic wear plates after cleaning them. It is "normal" for the plastic wear plates to wear the zinc from the slide bars. Then they will rust and scoring will occur, they say this is "normal". But before next use you should sand the rust off, clean and lube them once again.
They recommend disassembling the hitch once a month to lube the pivot bolt with axle grease.
You know they say, if it sounds to good to be true, it probably is. I think this is one of those. I suppose you could not do any of this and just take it in once a year and have all the parts replaced.
IMHO this is just to much work, just so I don't have to pay attention when backing up.