Hitch-Hike (1977)

Walter Mancini is a egoistical newspaper editor whom is driving across California with his spiteful wife, Eve, on a weekend getaway to save their troubled marriage. But things take a turn when they pick up a stranded motorist, named Adam, whom takes them hostage revealing himself to be a fugitive running from both the police and his two accomplice's after robbing a bank and making off with all the loot. But things are not always as they seem as Walter and Eve try to find a way to not only get rid of their unwanted car guest, but find a way to deal with each other when both see the tempting offer of the stolen $2 million in cash Adam always has on him.