Schlörwagen

The Schlörwagen (nicknamed "Göttingen Egg" or "Pillbug")[1] was a prototype aerodynamic rear-engine passenger vehicle developed by Karl Schlör (1911–1997) and presented to the public at the 1939 Berlin Auto Show.

The aerodynamic shape and far back center of gravity (because of the rear engine) affected the driving safety of the Schlörwagens and made them very vulnerable to crosswinds.

[2] In 1942, the prototype was fitted with a captured Soviet 130 hp (97 kW) radial aircraft engine, and driven around a test track.

Schlör's attempts to obtain the heavily damaged body from the British military administration failed, and its fate is unknown.

[1] In 2007 the German Aerospace Center (DLR), re-tested a small original model in a wind tunnel: It showed no stalls or braking turbulence.