I am surprised to see a roller coaster that you shop from in China. After all, it would seem that it would be more expensive to install train tracks than just to have a plain floor. Plus, some customers may not decide if they really want something quickly enough. Whenever I go to Carrefour and see the items packed along the moving walkway that goes between floors, it is always a mess. Not sure how they would be able to manage that problem in this store.