Henry Ford over to his son Edsel Ford in December 1918. Henry retained final decision authority and sometimes reversed the decisions of his son. Ford started another company, Henry Ford and Son, and made a show of taking himself and his best employees to the new company; the goal was to scare the remaining holdout stockholders of the Ford Motor Company to sell their stakes to him before they lost most of their value. (He was determined to have full control over strategic decisions.) The ruse worked, and Ford and Edsel purchased all remaining stock from the other investors, thus giving the
Ford Model T flexible mass production. As a result, Ford's cars came off the line in three-minute intervals, much faster than previous methods, reducing production time from 12.5 hours before to 93 minutes by 1914, while using less manpower. In 1914, Ford produced more cars than all other automakers combined. The Model T was a great commercial success, and by the time Henry made his 10 millionth car, half of all cars in the world were Fords. It was so successful Ford did not purchase any advertising between 1917 and 1923; instead, the Model T became so famous, people considered it a norm.