<prompt> Bhala okuqhubekayo kwalesi sigaba - USimon waqala umjaho wakhe ngo-1970 egibele i-Vollstedt chassis esetshenzisiwe e-Phoenix International Raceway kodwa waphonswa eceleni ngenxa yokwehluleka kwe-magneto ngemva kwemijikelezo emine kuphela. Wenza i-Indianapolis 500 yakhe  <response>: waqala ngalowo nyaka futhi waqeda endaweni ye-14. E-Ontario Motor Speedway ngoSepthemba, uSimon wabamba indawo yakhe enhle kakhulu yomsebenzi wakhe endaweni yesithathu futhi waqeda eyeshumi ku-1970 USAC National Championship. USimon wayezoqhubeka nokuncintisana kancane ngawo-1970, engakaze afane nokuqeda kwakhe isizini ka-1970. Ngo-1979, uSimon wasekela i-USAC ngesikhathi ihlukana neCART. Ukuba ngomunye wabashayeli abambalwa ukuqedela uhlelo lwe-USAC, uSimon waqeda ngo-8 ku-Championship. Ngo-1980 uSimon wathuthela e-CART futhi waqhubeka nempumelelo encane kuwo wonke ama-1980 ngenkathi ehlala enokuncintisana okuncane. Wafaka isizini yakhe engcono kakhulu ye-CART ngo-1987 lapho enza ukuqala okungu-11 futhi wafaka ama-top-ten amabili kufaka phakathi indawo yesi-6 e-Indy 500, enhle ngokwanele ukuba ibe ngo-20 emqhudelwaneni we-CART. Isizini eyingxenye ngo-1988 lapho uSimon aqopha khona indawo yesishiyagalolunye eqinile e-Indy 500 kwakuwukuqeda kwakhe njengomshayeli. 