Jim Halsey, a young man delivering a car from Chicago to San Diego, spots a man hitchhiking in the West Texas desert and gives him a ride. The hitcher, John Ryder, is brooding and evasive; when Jim passes a stranded car, however, Ryder forces his leg down on the accelerator. Ryder calmly states he murdered the driver and intends to do the same to Jim. Terrified, Jim asks what Ryder wants. He replies, "I want you to stop me." Ryder strokes Jim's face with a knife while telling him to say, "I want to die." When Jim realizes that Ryder never put on his seat belt and the car's passenger door is ajar, he shoves him out of the door. Relieved, Jim continues on his journey. When he sees Ryder in the back of a family car, Jim tries to warn them but becomes involved in an accident. He later comes ac