The Sugarland Express (1974)

"A girl with a great following. Every cop in the state was after her. Everybody else was behind her."

Married small-time crooks Lou-Jean and Clovis Poplin lose their baby to the state of Texas and resolve to do whatever it takes to get him back. Lou-Jean gets Clovis out of jail, and the two steal their son from his foster home, in addition to taking a highway patrolman hostage. As a massive dragnet starts to pursue them across Texas, the couple become unlikely folk heroes and even start to bond with the captive policeman.