Built on principles tried in the 1970's, the Steinwinter is as odd looking today as it must have been then. The idea was to decrease the size and aerodynamic drag of the typical truck. This skatelike vehicle proved unpopular with drivers and suffered from handling problems, testing was stopped after 3000km.
Introduced at the 1983 Frankfurt Motor Show as the Supercargo 2040, it uses a Mercedes chassis, a 400hp Daimler-Benz engine, independent air suspension, limited slip diferential, anti-lock brakes, and climate control.
The story goes that it was turned into a TV car for the 1988 series "The Highwaymen". However it seems considerably smaller than the TV car. Another rumor says that it survives intact somewhere. Internet Movie Car Database entry: http://imcdb.org/vehicle_206906-Steinwinter-Commercial-Motor-Vehicle.html
Info:
http://blog.hemmings.com/index.php/2009/09/23/as-for-jettos-truck