Opel Blitz 1,0 t Frontlenker Kastenwagen Prototyp (1,5-23) '1937
Opel Kadett Cabrio Spitzname "Strolch" Prototyp (K-38) '1938
Opel Blitz A Prototyp '1956
Opel Experimental GT '1965
Opel Commodore GS Cabriolet von Karmann (A) '1967–68Produced in about 4 copies
Opel GT Preproduction Prototype '1967–68