Mezue ahịrịokwu na-esonụ: Sachs na onye ọkwọ ụgbọ ala egwuregwu Dave MacDonald, onye rookie 500, nwụrụ n'ihe mberede ọkụ nke gụnyere ụgbọala asaa na agba nke abụọ nke
1964 Indianapolis 500. MacDonald na-akwọ ụgbọala nke Mickey Thompson nwe ma chepụta, #83 "Sears-Allstate Special". Thompson rịọrọ ndị ọrụ USAC ka ha gaa ụlọ ọrụ ya na California iji nyochaa ụgbọ ala ahụ mgbe a na-arụ ya ka ọ ghara itinye ego na ụgbọ ala ahụ ma ọ bụrụ na enwere ohere na a ga-achụpụ ya na Speedway. USAC nabatara arịrịọ ahụ ma nyefee ụgbọ ala ahụ na ngwugwu mmetụta ala ya. Ka ọ na-erule oge ụgbọ ala ahụ ruru Speedway na May, USAC agbanweela uche ha ma mebie ya. N'ịrụ ọrụ n'ime oghere ndị dị n'ebe a na-adọba ụgbọala, Thompson na ndị ọrụ ya wughachiri ụgbọala ahụ ka o kwekọọ n'ụkpụrụ ọhụrụ nke USAC. Mgbanwe ndị a, mwepụ nke fenders, ịgbanwe gaa na taya ndị buru ibu na ịbawanye ịdị elu site na sentimita abụọ ruo anọ, mere ka ụgbọala ndị ahụ ghara iguzosi ike. Graham Hill nwalere ụgbọala ahụ tupu Indy ma jụ ịkwọ ya na 1963. Masten Gregory dara na mbido ọnwa a n'ihi ikuku na-ebuli ya elu. Mgbe MacDonald tozuru oke na tupu agbụrụ ahụ, World Grand Prix Formula One Champion Jim Clark, onye maara MacDonald ma kwanyere ikike ya ùgwù, so onye Californian ahụ ruo ọtụtụ okirikiri. Mgbe ha batara n'ụgbọala ahụ, Clark gwara MacDonald hoo haa ka o si n'ụgbọala ahụ pụta. "Si n'ebe a pụọ", ka Clark kwuru. "Nanị pụọ ma pụọ". Ma MacDonald chere na ọ bụ ọrụ dịịrị ya imezu nkwekọrịta ya na Thompson. Ndị ọkwọ ụgbọala ndị ọzọ ṅara ntị na ndụmọdụ Gregory ma zere ụgbọala ndị Thompson. Tupu agbụrụ ahụ, Gregory bịakwutere onye ọkwọ ụgbọ ala Formula One Jack Brabham, onye nọ n'akụkụ MacDonald na grid, ma gbaa Brabham ume ka o nye rookie ohere dị ukwuu. Brabham kwuru na ọ bụ ndụmọdụ Gregory nyere ya mere o ji dị ndụ.