You're in for a ride of the century. I wrote this on my phone on a plane, sorry not sorry.
I can't describe this better than this: this is the best possible trollfic that I can write, and it's about Twilight Sparkle inventing a flying train, and what happens. Written in a hasty, slightly stilted narrative, spelling mistakes left uncorrected, story slapdashedly crafted as the inspiration came. It is a story of friendship, of adventure, and most importantly flying trains.