Ku dhameystir weedha soo socota: Sanadkii 1966, Simpson wuxuu la kulmay cir bixiyaha NASA Pete Conrad, kaasoo Simpson ku baray waxyaabaha loo yaqaano Nomex ee loo isticmaalo dharka hawada sare ee barnaamijka Apollo. Isla waqtigaas, DuPont waxay sidoo kale la xiriirtay shirkadda Hinchman ee ku saabsan soo saarista dharka tartanka Nomex. Sanadkaas Indianapolis 500, darawalka Mel Kenyon wuxuu xidhay dharka dabka ee Nomex oo ay soo saartay Hinchman. Dabayaaqadii sanadkaas, dhowr darawal ayaa bilaabay inay tijaabiyaan dharka tijaabada ah ee Nomex ee Simpson, oo ay ku jiraan darawalada F1 Walt Hansgen iyo Masten Gregory, darawalka NASCAR Marvin Panch, iyo darawalka SCCA Trans-Am Series Bob Tullius. Shirkadda Simpson ee Simpson Performance Products waxay soo saartay dharkii ugu horreeyay ee ganacsi ee Nomex, oo loo yaqaan "Heat Shield Firesuit", sanadkii 1967. Dharka waxaa xiran 30 ka mid ah 33 tartame oo ka tirsan tartanka.
Indianapolis 500 ee sanadka 1967