So there I was, balls deep in slacking off on a week night, when I happened upon an unattended cart. I noted it for future reference, because sometimes customers leave their carts unattended for short periods of time. I went upon my nightly routine of pushing the minimal amounts of carts on the lot and chatting it up with the folks at the service desk. On my way to the back room for my break, I noticed the same cart in the same location with the same stuff in it. Mind you, this cart had more than just a few things in it. It looked to be a half stalked weekly grocery run for a family of 6, due to the fact that it had a lot of groceries in it from the aisles before it and none after it. I then realized... The customers must have vanished. Completely disappeared off the face of the Earth. No scientific or religious reasonings could answer why a customer left a cart stocked with food.
This was only week one.
Since then, there have been numerous sightings of the same strange, unattended grocery cart throughout the store, and there has yet to be an explanation.