Rubuta ci gaba don wannan sakin layi - An yi gyare-gyare ga jiki da kuma sauya canji don motocin GP2 da GP3 na 1949 da 1950 na gaba, GP3 kuma yana samun supercharger mai matakai biyu. An sake gina su don yin oda, kuma an ba Geoffrey Crossley da Joe Kelly bi da bi. Crossley ya ɗauki GP2 zuwa Grand Prix na Belgium na 1949, amma zai iya gudanar da matsayi na bakwai kawai. A cikin 1950 ya kafa wasu bayanan sauri sama da mil 50, kilomita 50 da kilomita 100 a kan hanyar Montlhéry. Kelly ya fi mai da hankali kan tseren Irish, kuma mafi kyawunsa shi ne na uku a gasar Ulster Trophy ta 1952. Dukkanin direbobi biyu sun dauki sassan su zuwa 1950 British Grand Prix
, gasar farko ta gasar tsere ta duniya. Duk da haka, yayin da Kelly ya gama, ba a ba shi izini ba; Crossley ya yi ritaya tare da lalacewar watsawa.