Around that same time, in the wake of the 1979 entry controversy, and the formation of CART, the race changed to an invitational event, rather than an Open, rendering the "sweepstakes" description inappropriate.
Osim toga, nakon kontroverzi oko prijava na utrci 1979., i osnivanja CART-a, utrka je postala pozivni događaj (invitational) umjesto ranijeg otvorenog (open), te je opis "sweepstakes" postao nevažeći.