I'm watching this movie, Final Run, in which a passenger train, traveling at high speed, loses control and becomes a runaway train. Some nonsense about some kind of new locomotive technology, and then the engineer spills coffee on the equipment, and, bang, there's no stopping the damn thing, and there's no switching to manual, if there is any kind of manual. The engineer tries to repair some fuses outside and gets electrocuted and falls off, so now no one is even pretending to be in charge.
A bunch of passengers with some skills try to solve the problem, to no avail. The locomotive just won't respond to anyone's efforts.
My question is: in order to save the passengers, wouldn't it be a good idea to try to uncouple the locomotive from the rest of the train? That way, the passenger cars would eventually come to a stop on their own, while the runaway locomotive could be dealt by some specialists up ahead, who would then have some options, including derailing the damn thing at some (safe) point.
What am I missing?