When automobiles were first built, they were put together by small groups of workers, and may have taken weeks or even months to complete.
Around the beginning of this century, Henry Ford and other car makers introduced the assembly line, where each worker fashioned only one part of the car.
Soon an entire car could be built in a day and a half. Improvements in the assembly line continued until, by 1916, a car could be built in as little as 90 minutes!
Most plants today turn out more than 50 cars an hour. And the fastest assembly lines can turn out more than 100 vehicles in an hour!
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