 Nyora kupfuurira kweiyi ndima - 1974 akaona Oliver achitarisa paCanAm, achitora zita renhevedzano reMumvuri. Akanga achiva akabatanidzwa zvikuru mubato revatungamiri veShadow, asi aizokwikwidza muFormula 5000 yeboka kwemwaka mitatu, uye akatodzokera kuF1, achigumisa wechishanu mu 1977 Race of Champions, uye kutora 9th muSweden Grand Prix. 