When I was young, I lived in NY. Though I lived in Queens and not The City, so for some here, that doesn't count for much. We walked to the grocery store and brought our own cart. It was pretty sizable and my mother would buy at least a week's worth of groceries as there was no way in hell she was going to spend her time going back and forth to the store.
For someone to say there is no reason for anyone to ever get a cart unless you are having 50 people over is just stupid. She should try feeding a family, and then get back to us.
Almost like not being able to read.