Robert Eberan von Eberhorst

[2] He was responsible for turning Chief Engineer Porsche's ideas in physical reality, and his early contributions to Auto Union's successes included development of side skirts and aerodynamic bodywork along the belly of the record breaking streamliner car, additions that were some of the earliest experiments with ground effect downforce to have been applied to a car.

With a swept volume of three litres, in accordance with the contemporary Grand Prix regulations, the supercharged V12 mid-mounted engine could develop 400 bhp (300 kW).

[2] Chassis modifications were made aimed at improving the drivability of the car by mass distribution (revised driver and fuel tank position), and a new de Dion rear suspension replacing the previous swing axle system.

During World War II he was involved in the design of the Tiger tank, initial testing of the V1/V2 rockets, and provided much research data on improving fuel consumption.

Eberhorst was by now recognised as one of the world's premier racing car design theorists, so in 1949 he moved to Dunstable in the UK, where he worked for English Racing Automobiles designing the chassis for the 1952 Bristol engined 'G' type grand prix car,[3] and on the Jowett Jupiter chassis.