Vehicles that are autonomous or human-operated may drive in a platoon to achieve energy savings. A leader vehicle receives information broadcasts from following vehicles that include a state of energy and one or more other values such as energy usage rates, range, destination, and aerodynamic properties. The leader vehicle may then determine an ordering of vehicles that increases the range of the platoon, e.g., reduces the number of refueling/recharging stops of the platoon. Other considerations for ordering the vehicles may include overall energy savings and a fair distribution of energy savings. A desired ordering may be achieved by transmitting swap commands to pairs of vehicles until the platoon is in the correct ordering.