They take all of the trains off of the coasters at WOF and store them in the maintenance building where they get torn down every off season. Granted we have fewer coasters than most parks, but consider 3 trains for Mamba, 2 for Timber Wolf, 1 for Boomercrap, 1 for Wacky Worm and then the 6 cars for Dragons, that takes up a lot of room. Not to mention they also tear down several of the flat rides each season (Octopus, Scrambler, etc.) and take the cars off the rest (Zulu, Skyliner, Dutchman, etc). Thank goodness the maintenance area is rather large. :)