Actually there is ALOT of room above the coaster track. In fact, if you were to look from the ceiling down you would be QUITE freaking out at how high up you really are... and way way down below is the track. Plenty of open space. (not that I've done this... ahem)
There is also some shop space on the backside of the mountain, though not enough to do much with. But yea, I would say that you could double the size of the coaster track in there pretty easily.
There is also some shop space on the backside of the mountain, though not enough to do much with. But yea, I would say that you could double the size of the coaster track in there pretty easily.