Ku sii qor faqradan - Simon wuxuu tartankiisii ugu horeeyay ka ciyaaray 1970 isaga oo kaxeynaya Vollstedt chassis gacan labaad ah oo ku yaal Phoenix International Raceway laakiin waxaa laga saaray qaladka magneto kadib 4 wareeg oo kaliya. wuxuu sameeyay Indianapolis 500
wuxuu bilaabay sanadkiisi wuxuuna kusoo dhamaaday kaalinta 14-aad. Intii lagu guda jiray Ontario Motor Speedway bishii Sebtember, Simon wuxuu qabsaday xirfadiisa ugu fiican ee xirfadiisa oo ah kaalinta 3aad wuxuuna dhammeeyay 10aad ee 1970 USAC National Championship. Simon wuxuu sii wadi lahaa inuu si tartiib tartiib ah u tartamo sanadihii 1970-yadii, marnaba lama jaanqaadi karin dhammaystirka xilli ciyaareedkii 1970-kii. Sanadkii 1979, Simon wuxuu garab istaagay USAC intii ay kala go'een CART. Isaga oo ka mid ah wadayaasha yar ee dhammaystiray jadwalka USAC, Simon wuxuu dhammaystiray kaalinta 8aad ee Horyaalka. Sanadkii 1980 Simon wuxuu u wareegay CART wuxuuna sii waday inuu guul yar gaaro 1980s isagoo wali ah tartan yar. Wuxuu diiwaan geliyay xilli ciyaareedkiisii ugu fiicnaa ee CART 1987 markii uu sameeyay 11 bilow ah oo uu diiwaan geliyay laba tobanka ugu sareeya oo ay ku jiraan kaalinta 6aad ee Indy 500, oo ku filan kaalinta 20aad ee horyaalka CART. Xilli ciyaareedkii 1988-kii oo uu Simon ku dhammeystirey kaalinta 9-aad ee tartanka Indy 500 ayaa ahaa kii ugu dambeeyay ee uu noqdo darawal.