Rubuta ci gaba don wannan sakin layi - P115 ya fara bayyana a Dutch Grand Prix (tare da sabon Brabham BT24 da Lotus 49) amma ba a yi tsere ba har zuwa Grand Prix na Jamus
a Nürburgring. (Wani ɗan wasa) Stewart ya kasance yana tafiya da kyau a Nürburgring kuma ya sami damar cancantar motar a jere na gaba tare da na uku mafi sauri lokaci na 8:15.2. Bayan ya sauka zuwa na bakwai bayan farawa Stewart ya sami damar komawa zuwa na uku ta hanyar 5 lokacin da aka gama tserensa ta hanyar rashin daidaituwa iri ɗaya wanda ya shafi P83 na Spence a farkon tseren.