His masterpiece 'Modern Times' features the iconic assembly line sequence where the protagonist is literally consumed by the machinery of industrial production.
Walter Lang GermanyIn 'Metropolis,' the conveyor belt systems represent the dehumanizing factory work that oppresses the working class in a dystopian future city.
Billy Wilder Austria-Hungary'The Apartment' uses the insurance company's vast office floor as a metaphorical conveyor belt of corporate conformity and emotional detachment.