Citizen Band radio takes to the freeways for fast-lane thrills and fly-over spills. Trucker "Rubber Duck" (Kris Kristofferson) signals the big 10-4 when he and his unsuspecting ride along (Ali MacGraw) are chased through three states by a corrupt traffic cop named "Dirty Lyle" (Ernest Borgnine). The green light is sent out over the CB airwaves for a convoy of truckers to help keep the police off his trail. Director Sam Peckinpah steps on the gas for this all-action adventure jam-packed with sensational stunts.