sentences:  With the growth of the German economy, NSU was interested in offering larger cars to the growing middle class, and in 1962 NSU president Gerd Stieler von Heydekampf authorized the development of a mid-sized front-wheel drive sedan, using the company's revolutionary new Wankel engine technology.Chief engineer Ewald Praxl was given the assignment to develop the car, originally envisaged at 800 kg and 80 hp, starting from a clean sheet.Luthe was given responsibility for the design, working with the engineering team of Walter Froede and Georg Jungbluth,
  
  to utilize the compact Wankel engine, itself created by Felix Wankel.