I have no side image of this, but here is some eye candy and the only information I have. I have no way to verify this information so take it at whatever value you perceive. This seems to fit the ideal shape quite well above. A bit steep on the back perhaps but the front seems to have the idea.
1937 Schlor Pillbug 0.13 cD
1939 Maybach Stromlinienkarosserie 0.16 cD with flat glass. 0.14 cD with curved glass.