Here's how I solved this: I keep a crate in the trunk of my car. After paying my groceries, I put them back in the shopping cart. I drive that to my car, put t

Here's how I solved this: I keep a crate in the trunk of my car. After paying my groceries, I put them back in the shopping cart. I drive that to my car, put the groceries in the crate, and return the shopping cart. No bags needed, and unloading at home is easier too.