I spoke to the operators last year. I had a post earlier in the thread. They have 5 vehicles on site but can only run a maximum of four at one time. If they are having issues and can only run two at a time, they will not use the outside track, thus allowing for better capacity. If they are running three or four vehicles, they will always use the outside track, unless weather doesn't permit. So, if you see them using the outside track, it's three or four vehicles running.