Ford Motor Company's most important contribution to automotive manufacturing was the (moving) assembly line. First implemented at the Highland Park plant (in Michigan, US) in 1913, this new method let each workers to stay in one place, to do the same job repeatedly as the vehicles went by on the assembly line. The line proved to be very efficient; it helped the company make more cars, and make them cheaper than other car companies could do at the time. Before using the assembly line, Ford made 12,000 Model T's in a year. With the assembly line, Ford could make 12,000 Model T's in just two days. Ford had discovered how to make more cars that more people could afford to buy. He even paid his workers higher salaries than other car companies and still made money.