sentences:  Following the takeover of NSU by Volkswagen, Luthe continued to work for Audi from 1971 to 1976.His first project at Audi was the Audi 50, on which the original Volkswagen Polo was based.Luthe completed the styling of the tidy three-door hatchback design, as well as guiding the interior design; the concept of the dashboard design is remarkably similar to that proposed by Luthe (but rejected by the NSU management) in the original Ro 80 prototypes.