Sierra Sidewinder features two trains with four cars with two rows each, where each car is locked in position in the station for stability during loading and unloading but once the train leaves the station the cars spin freely on their own axis.
Sierra Sidewinder features two trains with four cars with two rows each, seating two per row back-to-back. Each car is locked in position in the station for stability during loading and unloading. Once the train leaves the station the cars spin freely on their own axis. 
