Pedzisa mutsara unotevera: Apo American Automobile Association (AAA) yakabva mumitambo yemotokari pashure pemwaka wa1955, ichidudza njodzi yeLe Mans norufu rwaBill Vukovich pa
Indianapolis sezvinhu zvinobatsira, zvose zviri zviviri SCCA neNASCAR zvakataurwa sevanogona kutevera. Pakupedzisira, USAC yakaumbwa naTony Hulman muridzi weIndianapolis Motor Speedway. Yakava mutongi wemitemo, magadzirirwo emotokari, uye zvimwe zvinhu nokuda kweiyo yaidana kuti makwikwi emotokari, mwero wakakwirira zvikurusa wemakwikwi eUSAC. Kwenguva yakati kwakanga kune nhevedzano yakaparadzana yezvirevo zvemotokari dzemakwikwi dzakagadzirirwa kumhanya paivhu, panzvimbo pemigwagwa yakavharwa.