 Nyorai kupfuurira kweiyi ndima - USAC pakutanga yakaedza kurambidza vatyairi vose veCART kubva muna 1979 Indianapolis 500, achizivisa zvikwata zveCART neteregiramu panguva yemutambo wavo kuAtlanta Motor Speedway, kusvikira CART yabudirira kuwana mutemo wekubvumira motokari dzayo kuti dzikwanise. Pamakwikwi 20 akaitwa muna 1979, 13 akanga ari rutivi rweCART Championship ya1979. Kuedza kwakaitwa neUSAC neCART kubvumidza makwikwi pamwechete muna 1980 seChampionship Racing League kwakaita kuti USAC ibve mushure memakwikwi mashanu, uye pakupera kwa1981 USAC chete yakatenderwa nhabvu yemakwikwi asphalt yaive Indianapolis 500. 