1966 Ford Magic Cruiser
I took these photos in April 1966 at the New York International Auto Show and thought it would make a great model. I seem to have the only color photos of it in existence. (At least there are none on the web)

I wonder if this show car got me to buy a new 1968 Torino GT? Never thought about that before.

Barris Kustom City is credited for building the 1966 Galaxie 500 Magic-Cruiser and  second version based on a 1967 Galaxie XL. The Magic Cruiser II seems to use the roof from the original. Based on the photos of the 1967 version I see that the bumper is cut to fold down under the tailgate for easier entrance, so I included those reference photos here. The location of these cars is unknown to me.
I have a hunch that the medallion on the fastback above the rear wheel well is an access hole to a hatch pivot point. It somehow seems out of place there but would make sense for this purpose. It's gone on the 1967 version below.
The 1967 Magic Cruiser II
Detail reference  photo of the Magic Cruiser II. Notice the complex dropping bumper and tailgate is nearly touching the ground.
Detail reference from "Barris Kustoms of the 1960s" by George Barris and David Fetherston. Colorized by Bob Sifferd