 Its streamlined shape was designed by Hans Ledwinka and Erich Übelacker and was based on the Tatra 77, the first car designed with aerodynamics in mind.The body design was based on proposals submitted by Paul Jaray of Hungarian descent, who designed the famous German Graf Zeppelin dirigibles.A fin in the sloping rear of the Tatra helps to divide the air pressure on both sides of the car, a technique used in later aircraft.