Amazon opened its first checkout-free store in early 2018, and it has said it could open as many as 3,000 cashierless Amazon Go stores by 2021. So far, most have been smaller convenience stores, but people have speculated that it’s only a matter of time before Amazon brings the cashierless checkout to large supermarkets. That said, it’s unclear how exactly Amazon will make that model work with the many items in a grocery store that need to be weighed before purchase, like fresh fruit and vegetables. But last month, Amazon confirmed that its engineers are testing Go tech at a 10,400-square-foot retail space in Seattle.

Amazon is notorious for trying multiple ideas at once, and just last week, the company said it plans to roll out another grocery store format. Supposedly, that model will be different from Whole Foods but will still have cashiers. Amazon is also considering licensing its cashierless tech to other retailers, like movie theaters, stadiums and airports.

Amazon did not immediately respond to a request for comment.

It’s not quite as ground-breaking as what’s being done by Amazon with its Amazon Go stores. Here, customers just pick up whatever they want and a combination of sensors and cameras makes sure they’re billed automatically when they leave the store — Sainsburys’ tech requires a bit of work by the customer. However, the popularity of self-scan grocery shopping in the UK means the process won’t be alien to users.

The initiative uses Sainsburys’ existing SmartShop Scan, Pay & Go technology, which is currently live in eight of its stores across London. In these locations, though, customers still have the option of making their purchase at a checkout. By removing tills entirely, Sainsbury’s is making a clear push to get this new way of doing things over the line, and certainly marks the beginning of the end for traditional modes of bricks-and-mortar shopping.

Ford is blaming your kids for shopping cart mishaps, which seems a bit unfair. “Children love to copy adults — when they push a trolley, to their minds, it’s like they are behind the wheels of a car — with long, wide supermarket aisles as their racetrack,” the company wrote. That’s fair enough, but adults are just as likely to let a loaded cart roll away into a parked F-150 while they fumble with the keys.

The video (above) shows the system working to perfection, smoothly braking to prevent accidents with stacked fruit, hapless shoppers and a Mustang. Suffice to say, this device isn’t coming to a grocery store near you, considering the frequency with which shopping carts (trolleys in the UK) are purloined. Still, it’s a fun prototype and a canny piece of marketing from Ford.