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Got a brand new shopping cart at Walmart
(lemmy.world)
As you can see it's shiny new and still has its packaging on it. It's was so smooth and quiet!
A guess is that the ones that dont turn, are meant to go on escallators (or whatever you call those escalator ramps).
The wheel rims slot into the escalator surface and stops them from rolling, like brakes. If the wheels could turn, there mayde is a higher risk of them not stopping on the ramps
No, Ikea carts have both four-wheel swiveling and can go on the travellator.
OK - my theory did not hold ๐
I also just now noticed that OP has shared a picture of a cart with stiff rear wheels and no brakes