 Nyorai kupfuurira kweiyi ndima - Kirasi yemotokari yemotokari yakatanga sechikamu cheAAA Contest Board. AAA yakasarudza kurega kuranga makirasi ose emijaho pashure pokufa kwaBill Vukovich pa1955 Indianapolis 500 kwakateverwa pedyo nenjodzi ye1955 Le Mans. USAC yakatora chirango mumakirasi avo ose kutanga muna 1956. 