Ahh I get it now. They are going old school movie set style. You have 3 layers of background around the track. The foreground, middle ground, and lastly the background aka wall projection. Disney use to use this sort of thing with horizons and world of motion. I guess we may see some of that again. The nature scene photo now makes sense. They will use tree effects for the illusion of zooming through a forest. The close up trees will give the illusion of going a lot faster unlike before where everything was a lot more open thus giving you a clear idea of just how big the distance was. The animated mountain scenes projected on the walls will make it so it all looks like outside when in truth its still inside. They may also use a similar effect on the ceiling to ensure unlike previous versions it feels less like a ride in a gutted building.