BENTONVILLE, AR (WCMH) — Have you ever found pushing a shopping cart to be too much work? Walmart is working on the solution.

The US Government recently granted the retail giant a patent for a system that allows shopping carts to drive themselves.

According to the patent application, the carts will be equipped with detachable motors that have sensors and video cameras. Customers will be able to request a cart using a ‘user interface device,’ likely a smartphone, and the roaming motor will be able to fetch a cart and bring it to the customer.

The filing also says the system will be able to identify unattended carts in the parking lot and return them to a docking station.

There is no word yet on when or where Walmart intends to start rolling out the system.