In the business pattern, the manufacturer provides ONE, an Internet platform for users to choose or create their own car. On the platform, users can choose and assemble their desirable parts in a virtual world. Users can develop their ideal cars with tools provided by the manufacturer, also they can upload their own designs onto the platform. Other users can pay to use their designs. Both the developer and the manufacturer can earn profits. The development of our automobiles is based on a driver's seat module and the development tool provided by the manufacturer to create various types of cars.