Bentleys are extremely heavy, would be rather hard to be able to get something powerful enough to push the 5th wheel down into the ground hard enough to lift the other two rear wheels.
Piece of cake. It's amazing how much force can be acquired these days.
This is the peasant solution to being too stupid to parallel park. The royalty has a chauffeur to do it for them. Those crazy right-wing nuts who are obscenely rich and drive themselves have cars that parallel park on their own.