At :30 secs into the video, the camera is inside the loop. At :34 secs into the video, the camera moves to the left, BEHIND the front of the loop. The big structure between the cameraman and his next position makes it impossible for him to move there in a split second. Besides, I don't think the structure would be study enough to hold straight up with a train this size and weight going full speed. Roller coaster carts do have wheels underneath the tracks, trains do not!