I’ve never seen carts with that little extra bit, but that’s what I imagined would be a good idea to have on them. Just some hooks to keep the bags from flopping to the bottom. Wherever you are is ahead of the curve when it comes to cart technology. 😅 The most tech in the carts around here is the locks on the wheels that turn on when you get too far away from the building to prevent people stealing them. 😮‍💨