Interesting. I am now going to have fun watching the parking lot.
WalMart, before a good storm is fun to watch. People stocking up, and unloading in the rain will leave carts wherever they finish with them. After the storm, the carts are blown up against the curb on the leeward side of the parking lot, like so many leaves.
Depends on how busy the parking lot is and how far away the cart return is.