Gurney's program ran out of money in 1968 and by the end of the year he returned to the United States to concentrate his efforts on the more successful Indycar program, in which Bobby Unser had won the Indianapolis 500 and the 1968 Indycar Championship.
Gurney quedouse sen diñeiro en 1968 e a finais do ano regresou aos Estados Unidos para concentrar os seus esforzos no máis exitoso programa da Indycar, no que Bobby Unser gañara as 500 Millas de Indianápolis 500 e o Campionato Indycar de 1968.