<prompt> Bhala okuqhubekayo kwalesi sigaba - uCheever waqala ukungena kwiFormula One ngo -, ngemva nje kokugubha kwakhe iminyaka engu - 20. Ngemva kokuhluleka ukufanelekela imijaho emibili yokuqala yonyaka e-Argentina  <response>: neBrazil ngoTheodore, wafika eNingizimu Afrika ngoHesketh, kodwa wathatha umhlalaphansi ngaphambi kwesikhathi. Wabe esegxila kwiFormula Two isikhathi esisele sika-1978 no-1979. 