1969 Zeltweg Eröffnungsrennen. Photo from the collection of Josef HumpelPost card1971 Interserie Zolder Porsche 908/02 driven by Otto Stuppacher /left/. Photo Pierre Devillers1972 Dobratsch (AUT). Photo from private collection Josef Humpel1975 Bergrennen Bad Mühllacken – photo Erwin Jelinek, source Technisches Museum, Wien1975 Bergrennen Bad Mühllacken – photo Erwin Jelinek, source Technisches Museum, Wien1975 Bergrennen Bad Mühllacken – photo Erwin Jelinek, source Technisches Museum, Wien1975 – 1000 KMS at the Österreichring in 1975, where Otto shared this Lola T294 with Hervè Le Guellec (in the car). Photo via FB1976 Hillclimb Josefberg with GRD F2?. Photo Christian Sandler1976 Hillclimb Josefberg with GRD F2?. Photo Christian Sandler /BW version/1976 Hillclimb Josefberg with GRD F2?. Photo Christian Sandler1976 Aspern – airfield race1980 Zeltweg?. Photo Christian Sandler
