The Sugarland Express (1974)

When faced with the loss of her infant son, Lou-Jean Poplin makes her husband, Clovis, escape from a minimum security prison. Threatened with capture, the couple take rookie Texas State trooper Maxwell Slide hostage, and head across the state in his patrol car. Pursued by dozens of police cars, the trio contend with their sudden elevation to folk heroes, and vigilantes out to stop them. Their only real friend may be trooper Captain Tanner, who struggles to find a peaceful end to the situation.