Nyorai kupfuurira kweiyi ndima - Muna 1954 Keller akavamba chinjo kuChampionship Cars. Akatyaira muAAA neUSAC Champ Car series, achimhanya mumwaka wa1954-1959 na1961 aine 32 anotanga, kusanganisira Indianapolis 500 kasere. Akanga achibatanidzwa mutsaona yakauraya Bill Vukovich muna 1955
. Akapedza ari pamusoro gumi 13 nguva, pamwe yakanakisisa kupedza 2nd kaviri (Atlanta muna 1956, uye Milwaukee muna 1961). Mugumo wake wakanakisisa weIndy 500 wakanga uri wechishanu muna 1961.