Car manufacturers are an interesting case, though. Despite all the efficiencies in the system, I do know of cases where boxes of replacement parts were helicopt

Car manufacturers are an interesting case, though. Despite all the efficiencies in the system, I do know of cases where boxes of replacement parts were helicoptered to the factory to avoid the contractual penalties for holding up the Just In Time system. There's definitely a place for "cheaper than helicopter" delivery, even if it is only where things have gone so horrifically wrong that paying almost any price is worthwhile.