A group of two or more vehicles (21, 22, 23), each vehicle (21, 22, 23) comprising a communication unit (210, 220, 230) coupled with a navigation unit (211, 221, 231), wherein one vehicle of the group is classified as master vehicle (21) leading the group and the remaining vehicles of the group are classified as slave vehicles (22, 23) following the master vehicle (21), travel together. A central remote navigation server (30) provides the vehicles (21, 22, 23) with a navigation service, wherein the navigation server (30) calculates for each of the slave vehicles (22, 23) route instructions (506, 606) such that the slave vehicles (22, 23) are instructed to follow the master vehicle (21). The route instructions (506, 606) are transmitted to the slave vehicles (22, 23) via a communication network (10).