This invention describes a method, the information processing system and the autonomous vehicles that enable in-person socializing of passengers in multiple traveling autonomous vehicles. Under the collaborative control of one or more information processing system and on-bard controllers, multiple traveling autonomous vehicles carrying passengers who have matching interests or requests, overlapping travel routes and times are connected together mechanically while traveling at normal operating speed to establish a connected space to allow in-person interactions and socializing. A cluster of connected autonomous vehicles moves as one integrated vehicle.