The Wages of Fear (1953)
The first act is slow and boring as down-on-his-luck Mario gripes with his friends about there being no opportunities for success in the small Latin American town in which he is trapped. But then he takes a job with three of his friends to drive a couple trucks loaded with nitroglycerine through the jungles of Latin America, and the tension suddenly goes up to 11. As they drive the two trucks over poorly maintained roads through the middle of nowhere, the slightest wrong bump can spell certain doom. Each truck is a ticking time bomb with no one knowing how much time is left.
I found the main character repulsive in this film in which a whole lot of nothing happens for the first half of the film. He hates women and takes pictures of them. Lather, rinse, repeat. Then he discovers a murder and things start to get interesting, but then the whole thing is dropped, some more nothing happens, and then the movie ends with noting being resolved.
Coming up next: a movie about a group of old men and one about a group of kids.