Mezue ahịrịokwu na-esonụ: N'afọ 1954 Keller malitere mgbanwe gaa Championship Cars. Ọ gbara ọsọ na AAA na USAC Champ Car usoro, na-agba ọsọ na 1954-1959 na 1961 oge na 32 amalite, gụnyere Indianapolis 500 ugboro isii. O so n'ihe mberede nke gburu Bill Vukovich na
Ọ bụ n'afọ 1955. O mechara n'ime iri mbụ ugboro iri na atọ, na njedebe kachasị mma nke 2 ugboro abụọ (Atlanta na 1956, na Milwaukee na 1961). Ebe kachasị mma o meriri na Indy 500 bụ ebe ise n'afọ 1961.