it's actually a computer, In legoland germany are a few robocoasters. (kinda the same). You can create your own program, so the moves that the ride will make. After done with selection of manouvres. You get a cd or something like that. If a robocoaster is free, you can take place in it, and enter the cd with the data of the moves. All you have to do is then sit down and enjoy the moves. [:)]