Head of Mercedes-Benz passenger car development Rudolf Uhlenhaut at the M 950 F three-rotor Wankel engine used in the Mercedes-Benz C 111 experimental vehicle in 1969.

D579034 50 Jahre Mercedes-Benz C 111: Experimentalfahrzeuge mit Wankelmotor und Rekordwagen 50 years of the Mercedes-Benz C 111: Experimental vehicles with rotary engines and record-breakers