The New York subway system is aspie heaven. So many lines, trains and details to memorize. No wonder that one guy suffering from Asperger's learned so much about the subway that he was able to steal a train full of people and successfully operate it for a number of stops, before derailing after taking a turn at high speed.
Here in Southern California there isn't much fun to be had when you're hopelessly into trains for no reason.
He didn't derail the train, he ran a grade timing signal and didn't know how to reset the braking system, which is why he got caught. Right up until that point, he had operated the train perfectly making all the stops properly, and probably would have gotten away with things but for his being fooled by the GT signal and not knowing how to reset things.