<prompt> Ramba uchinyora ndima iyi - Simon akaita nhangemutange yake yokutanga mumakwikwi muna 1970 achityaira chassis yeVollstedt yakashandiswa paPhoenix International Raceway asi akaiswa parutivi nekutadza kushanda kwamagnet pashure pemakwikwi mana chete. Akaita Indianapolis 500 yake  <response>: rakatanga gore iroro uye rakapedza riri panzvimbo yechi14. PaOntario Motor Speedway munaGunyana, Simon akabata basa rake rakanaka rekupedza nzvimbo yechitatu uye akapedza 10th mu1970 USAC National Championship. Simon aizoramba achikwikwidzana zvishoma mukati memakore ose e1970, asingamboenzani nemagumo ake emwaka we1970. Muna 1979, Simon akatsigira USAC pakuparadzana kwayo neCART. Kuva mumwe wevatyairi vashoma kuti vapedze purogiramu yeUSAC, Simon akapedza 8th muChampionship. Muna 1980 Simon akatamira kuCART uye akaramba achibudirira zvishoma muma1980s achiramba achikwikwidza zvishoma. Akanyora nguva yake yakanakisisa yeCART muna 1987 paakaita 11 kutanga uye akanyora maviri gumi gumi kusanganisira nzvimbo yechitanhatu paIndy 500, yakanaka zvakakwana ye20 muCART championship. Mwaka wechikamu muna 1988 apo Simon akanyoresa nzvimbo yakasimba yechipfumbamwe muIndy 500 yaiva yekupedzisira semutyairi. 