<prompt> Qedela umusho olandelayo: Ku-F1, ngemuva kokuqala kwakhe okuthembisayo ngonyaka odlule, u-1966 kwaba unyaka ompofu kaStewart; ama-H16 BRM angama-3-litre ayengathembekile, yize uStewart awina i-Monaco Grand Prix ngemoto enenjini engama-2 litre. Isenzakalo esibaluleke kunazo zonke ngalowo nyaka kwaba ingozi yakhe ngesikhathi  <response>: I-Belgian Grand Prix eSpa-Francorchamps, eyaqala umkhankaso wakhe wokuthuthukisa ukuphepha ku-F1 futhi yabangela ukuba aphuthelwe yi-French Grand Prix eReims. 