Walmart Patents Robot Carts For Better Shopping

Is putting carts on robots enough to save retail in physical stores? A shopping cart is mostly empty space. At the end of a shopping run, when the cart is brimming with groceries and goods, it becomes fully useful, but it isn't until that point, and once it's full, it doesn't help the person trying to buy two cartfulls of stuff on their own. Walmart, the physical retail giant, doesn't want people to worry about the inadequacies of carts while shopping. So they filed a patent for a self-driving robot cart. Other routine tasks also are difficult to keep up with, particularly during peak hours.