Roadgames

Road Games also known as Roadgames is a 1981 Australian thriller film directed by Richard Franklin. The film stars Stacy Keach as a truck driver, and Jamie Lee Curtis as a hitchhiker.

Quid wakes the next morning in his truck. His pet dingo sniffs relentlessly at the garbage outside the motel, and Quid notices the van driver watching the dingo from the window of the motel room. Quid picks up a load of pigs from Universal Meats. He sets off for Perth with his load and passes various characters on the road a nagging wife and her family, a cautious man hauling a sailboat, and a station wagon crammed full of toy balls. He repeatedly passes by another female hitchhiker.The nagging wife creates a roadblock by streaming pink paper across the highway. When Quid stops at the sight of it, she climbs into his cab and orders Quid to catch up with her husband who left her at the side of the road. They play Whats My Line? to pass the time. The woman informs Quid about the grisly murder of a woman, and his nonchalant answers start to disturb her. She suspects that he might be the serial killer from the news. Quid stops the truck when he sees the green van parked along the road. Its driver has several trash bags and an esky. He appears to be burying the bags. When the van driver notices Quid watching him through binoculars, he abandons his work and drives away. ........

Source: Wikipedia