A large international cast takes part in this comedy in which the stories of numerous individuals whose cars are stalled in a massive Roman traffic jam are told.

• Gaumont International
• Clesi Cinematografica
• Alberto Sordi
• Annie Girardot
• Fernando Rey
• Patrick Dewaere
• Ángela Molina
• Harry Baer
• Marcello Mastroianni
• Stefania Sandrelli