Dee ihe ga-aga n'ihu na paragraf a - Simon mere asọmpi mbụ ya n'afọ 1970 na-anya ụgbọ ala Vollstedt nke abụọ na Phoenix International Raceway mana ọ kwụsịrị n'ihi ọdịda magneto mgbe ọ gachara naanị agba anọ. O mere Indianapolis 500 ya
bido n'afọ ahụ wee nọrọ n'ọkwa nke iri na anọ. Na Ontario Motor Speedway na Septemba ahụ, Simon weghaara ọrụ ya kachasị mma nke 3rd ebe ọ gwụchara 10 na 1970 USAC National Championship. Simon ga-aga n'ihu na-asọmpi asọmpi n'afọ ndị 1970, na-adabaghị na njedebe ya nke oge 1970. N'afọ 1979, Simon sonyeere USAC n'oge nkewa ya na CART. N'ịbụ otu n'ime ndị ọkwọ ụgbọ ala ole na ole iji mezue usoro USAC, Simon kwụsịrị 8th na Championship. Na 1980 Simon kwagara CART wee gaa n'ihu inwe obere ihe ịga nke ọma n'ime afọ ndị 1980 ka ọ ka na-asọmpi asọmpi. O tinyere oge kachasị mma ya na CART na 1987 mgbe ọ malitere 11 wee banye n'elu iri abụọ gụnyere ebe nke isii na Indy 500, nke dị mma maka 20th na CART championship. Oge oge na 1988 ebe Simon debere ebe siri ike nke 9 na Indy 500 bụ nke ikpeazụ ya dị ka onye ọkwọ ụgbọ ala.