I'm reading a very interesting book on the history of hovercraft at the moment. My Internet browsing history will reflect this as despite the respectable number of photographs, I still feel the need to find more on-line.
One of the weirder machines shown is the Hover Rover - an unholy coupling of a hovercraft and Landrover.
Apparently, despite the commentary on the film, the resulting machine wasn't a great success. Off-road, a standard landie is still better. Also quieter I suspect.
The 3 machines converted were apparently returned to the factory, put back into standard spec and then sold. It's just possible some or all of them survive somewhere just waiting for an enthusiast to restore them back to interesting condition with a aid of a big hair drier or two...