Donna, home alone with Tad, takes their failing Ford Pinto to the Cambers' for repairs. The car breaks down in Camber's dooryard, and as Donna attempts to find Joe, Cujo appears and attacks her. She climbs back in the car as Cujo starts to attack. Donna and Tad are trapped in their vehicle, the interior of which becomes increasingly hot in the summer sun. During one escape attempt, Donna is bitten in the stomach and leg, but manages to survive and escape back into the car. She plans to run for the house but abandons the idea because she fears the door will be locked and that she will be subsequently killed by Cujo, leaving her son alone.