The significance of Ford's development of the world's first automobile assembly line to the automobile industry: it has brought about a revolutionary improvement in automobile production efficiency, the automobile has entered the stage of large-scale production, and the focus of the world automobile industry has shifted from Europe to the United States.

Just-in-time production system is also called just-in-time production. This concept is called "lean production" in America. The biggest advantage is to improve production efficiency and reduce hidden dangers in inventory. Cook's later transformation of Apple's production process is based on this concept.

The second industrial revolution was from World War II to 1970s, and automobile products began to diversify and differentiate. Mercedes-Benz, BMW, Ferrari, Citroen and Rolls-Royce appeared one after another, and Europe regained its right to speak.

The third industrial revolution was after 1970s, when several Japanese automobile companies represented by Toyota applied new management mechanisms such as "Total Quality Management" and "Just-in-Time Production" to automobile production, and Japan became a new development center of automobile industry.

In the process of hundreds of years' reform, the automobile power system has experienced the transformation from steam engine to electric power and then to internal combustion engine. Although electric vehicles appeared as early as the19th century, they have never shined brilliantly due to the level of technology and efficiency.