A system (900) and method (1100) instructing a vehicle (910) where and when to refuel is disclosed herein. The system (900) comprises a server (925) for receiving a workflow for a vehicle (910). The workflow comprises an origination location (901) of the vehicle, a destination (950) of the vehicle (910), a route (905) to the destination, a cargo, a time of departure and a time of arrival. The server (925) determines a plurality of fuel stops (930) along the route (905).