Thirty+ years ago I sketched, on a napkin, a similiar vehicle although it was 2 in the back and one in the front. 2 seat design with passenger sitting behind the driver in an enclosed tubular body (picture fighter jet). The body leaned/pivoted over the rear axle. It was essentially an improved version of what PM mag had plans for in the 60s where they mated a VW front to a Kaw900 but mine pivoted/leaned. Imagine my surprise when I visited Disney (or EPCOT - can't recall which now) and saw the very vehicle displayed in the GM area. Have subsequently seen similiar on the inernet but can't seem to find one now. GM even had a video segment of the vehicle running a great speed through some leaf covered twisty roads on some overcast autumn day.