The "Model-T" was the first car to be mass-produced. Henry Ford introduced the assembly line in December of 1908, and as a result he was not only able to mass-produce the Model-T, but was able to offer it to his customers at a much lower price than the competition. By 1913, Ford was producing half of all cars sold in the United States, and by 1927, he had sold more than 15 million Model-Ts!