I was present for the first week that S:ROS operated. At that time, it was a single-train operation because they were still testing the second train. These water bottles simulated the weight of the riders.
I really enjoy the open trains and the lack of shoulder harnesses on these trains, but the restraints have been modified since the ride opened in 2000. In this picture, there is a simple metal tube that supports the yellow lapbar. Please continue to the next page to see how this arrangement was modified.