Based on the events of May, 1969, when fugitives Robert and Ila Fae Dent kidnapped Department of Public Safety trooper Kenneth Crone, commandeered his car, and led police law enforcement officials on a chase from outside Port Arthur, through Houston, up to Navasota, and on to Wheelock, where Ila Fae Dent's mother lived. At one point, a motorcade of more than 150 police cars and reporters joined the pursuit. FBI agent Bob Wiatt (who retired in 2004) confronted them at the mother's home and was forced to shoot Robert Dent, who was armed, in the neck, killing him. Wiatt wrestled Ila Fae to the ground and handcuffed her.
When the caravan is driving through the large crowd in Rodrigo, a bystander hands Lou Jean (Goldie Hawn) a piglet as a gift. Lou Jean proceeds to declare, "He's peeing on me!" several times. According to Steven Spielberg, this is because the piglet did start urinating on Goldie Hawn during the scene.