Warlords of the 21st Century (1982)

It's the 21st century, the Oil Wars have made a mess of the planet and the land outside major cities is lawless. After Hunter comes to the aid of Corlie, who has run away from the villainous Straker, he takes her to the peaceful community of Clearwater. Unfortunately for the citizens of Clearwater, Straker fully intends to get Corlie back.