I would like to select the speed of the rides, in general. Roller coasters would be good to select the speed stretch of chains , the intensity of the braking sections , and the initial speed of travel. If the selected speed is excessive, should derail the train. I would also like to select the number of cars and the number of trains , and select the time interval at the start of each train. It would be also good to have a tool to select and place , at one point of the travel, a camera to photograph customers when the train passes in front of it . Upon completion of the trip , customers can go to collect photographs on a photo shop.