Duel
Steven Spielberg's first feature. Based on a story first published in Playboy. A salesman going on a business trip over the day through California. After a contact with a big old truck on the road and a mysterious driver a lethal cat and mouse game start along the road.
This is in my book a real damn nice movie. Just about one-and-half hour long, a good story and a good actor. What else do you need?
And on top of that, a real nice Hitchcock feeling over the whole movie.
Spielberg knew his shit even back in '71