BENTONVILLE, Ark. (CBS) – In the future, shopping carts may push themselves.
Walmart is now working on a self-driving shopping cart that customers would be able to hail like an Uber – possible through a smartphone app.
The retailer filed a patent for a cart that has a motor and video cameras.
The best part? It would also be able to return itself from customers' cars to the store.
for more features.