One important features of the vibrant US economy of the 1920s was mass production. A well-known pioneer of mass production was the car manufacturer Henry Ford. He adapted the assembly line production to his new car plant in Detroit. The assembly line production forced workers to repeat a single task mechanically and continuously – such as fitting a particular part to the car – at a pace dictated by the conveyor belt. This was a way of increasing the output per worker by speeding up the pace of work. Standing in front of a conveyor belt no worker could afford to delay the motions, take a break, or even have a friendly word with a workmate. As a result, Henry Ford’s cars came off the assembly line at three-minute intervals, a speed much faster than that achieved by previous methods. The T-Model Ford was the world’s first mass-produced car. Mass production reduced the cost of goods and this resulted in mass consumption.