Pretty clever and versatile. Too expensive at $599? And the last paragraph - I wouldn't want to use it for a trip to the grocery store because I wouldn't want

Pretty clever and versatile. Too expensive at $599? And the last paragraph - I wouldn't want to use it for a trip to the grocery store because I wouldn't want to lug it down the aisles - seems pretty dumb, they have carts at grocery stores for lugging things. That's exactly it's best use case probably?