If you watch the video of it, it looks like this is just a rolling self checkout machine. So you basically self checkout with each item as you put it in the cart.
Giant in the mid-Atlantic has had this sort of experience for well over a decade I want to say? You pick up a scanner and scan your shop card, then you scan & bag your items as you shop and self-checkout at the end. Between that and grocery delivery I feel like there’s a lesson about timing & product in here somewhere.