I always tend to compare to the most aerodynamic 4-passenger car I know of, the Volhart-Sagitta V2:
I like the protruding pontoon front fenders and the way they fall off away from the bubble top. Comes now the Glickenhaus SCG 003C:
The surface detailing is 21st century, but if the cabin were expanded to VW Beetle size it would be very comparable.