The Schlörwagen (nicknamed "Egg" or "Pillbug") was a prototype aerodynamic rear-engine passenger vehicle
developed by Karl Schlör (1911–1997) and presented to the public in 1939.
The project was shelved with the onset of World War II and mass production was never realized.
The model was later taken to Russia and fitted with an external propeller engine.
The whereabouts of the sole functioning model remain unknown.