Pedzisa mutsara unotevera: Muna 1970, Bartlett akaenda kuUnited States kunokwikwidza muUSAC Championship (aka Indy Car) nhevedzano, achiedza uye achitadza kukodzera
Indianapolis 500. Bartlett akakwikwidza mune dzimwe nhangemutange nhatu dzeIndy Car, asi akakundikana kupedza.