O.K. that sounds mildly simple. I've give you one last piece of secret stuff to chew on. The video was shot in a grid and meshed together similiar to what Apple's CubicCoverter does except this is fully animated and the user governs where and when he will go in this 3d world. The secret: the pneumatic system and motion sensor moves the platform on which the user stands and raises lowers him at an angle according to the slope of the terrain he is on. The problem: the coordinate system to control only the Z axis is difficult to mesh with position of the animated video. I'm going to go get some well needed rest. I be back on the board tomarrow after noon.