The maps shown in the opening credits are presented in geographic sequence. The car is apparently driving from Los Alamos, New Mexico (site of an actual U.S. Government weapons research lab), traveling west through the towns of Santa Fe, Albuquerque, Grants, Gallup, Ramah, and through the Zuni Indian Reservation into Arizona, through St. Johns (down US Highway 666), Winslow, Flagstaff, Williams, Ash Fork, Kingman, and then into California, where the car is shown as being outside of the town of Needles, about 240 miles northeast of Los Angeles.