Answer
Kris Kristofferson was Ali MacGraw's co-star in the 1978 film "Convoy". The film is about a group of truckers who band together to protest unfair treatment by the authorities. Kristofferson plays the lead role of the trucker named "Rubber Duck". MacGraw plays the role of his girlfriend, "Melissa". The film was a commercial success, and it helped to launch Kristofferson's career as a film actor.