Pedzisa mutsara unotevera: Sezvo mwaka wakafambira mberi chikwata chacho chakaedza kugadzira'mapapiro' airfoil pamotokari yacho. MuItaly Grand Prix uye United States Grand Prix somuenzaniso, Stewart akamhanya MS10 ane yakakwirira kuturika-yakasungirirwa bapiro, rudzi rumwe chete rwakanga rwarambidzwa mumwaka unotevera mushure mokunge vatyairi vaviri veLotus vakatambura tsaona dzinopotsa dzichiuraya pa
Mubairo Mukuru weSpain. Pa1969 South African Grand Prix motokari yacho yakatombomhanya nemapapiro maviri akakwirira, rimwe riri mberi uye rimwe riri kumashure. Mune dzimwe nhangemutange MS10 yakamhanya nepapiro repasi, senge panguva yekukunda kwaStewart kwakanyanya kuGerman Grand Prix.