Pedzisa mutsara unotevera: Siffert akasiya chikwata pakupera kwa1969, apedza gore iri panzvimbo yechipfumbamwe, uye Rob Walker Racing Team yakakwikwidza kekupedzisira muna1970, ichipinda muLotus 72 yemutyairi Graham Hill, uyo akanga ava nemakore makumi mana, uye akaramba kuenda pamudyandigere mushure mekuita tsaona huru gore rakapfuura naLotus. Chiverengero chakanakisisa chaHill chakanga chiri chinzvimbo chechina pa
Spanish GP, asi akaenda kunobatana naBrabham pakupera kwegore.