Pedzisa mutsara unotevera: Muna 1954 Keller akatanga kuchinja kuva Championship 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
Gore ra1955. 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.