The never ending battle to keep parking lots free of wandering carts

After a wonderful trail ride Sunday evening, I popped in to the westside Payless for some reward sushi and to pick up milk.
As always, there was a cart left loose.  I rode it across the lot like an 8 year old boy, then took it inside to its proper spot.
I was in the store less than 5 minutes.  When I returned to the Jeep, another cart had materialized 5 spots down.
I'm beginning to wonder if somebody is watching me and thinks this is some sort of a game.