 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), travelling  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, Ask  Fork, Kingman, and then into California, where tge car is shown as  being outside of the town of Needles, about 240 miles northeast of  Los Angeles.