US Patent 11835966 Service system using autonomous driving

A service system includes a common server and multiple vehicles in communication with the common server to travel autonomously. Each vehicle performs tasks of multiple entities by cooperating with the common server. The common server includes an operating status database in which an operating status of each vehicle and a primary entity which has priority to use all or part of the vehicles are associated with each other. When one of the vehicles finishes a task of the primary entity, the common server determines whether the vehicle can perform another task of an entity other than the primary entity by checking the operating status database, and if determining so, performs the task of the other entity by cooperating with the vehicle.