I've found a promotional film for the Advanced Vehicle Engineers Mizar, a roadable airplane of the 1970s based on a Ford Pinto. It was married to the wings and rear engine of a Cessna Skymaster.
Click to view
(It's over 10 minutes long, but dull until 3:10 or so; I've tried to start the clip there but I'm not sure whether that Youtube feature will work.)
Unfortunately an accident with the Mizar earned its developers, Henry Smolinski and Hal Blake, a place on the
Doomed Engineers site.
Doug Duncan has
some great photos of the Mizar.
Here's a Mizar history site.