Supernatural, ehh. Something, yes. About two weeks about I had just finished coming out of Target. Usually I put buggy back in the cart area but I wasn't feeling it that day so I left in the spot beside my vehicle. The weather was pleasant not at all windy. The way I left the buggy it was facing the same way as my car. I get inside sit for a moment. Out of the corner of my eye I see the cart moving backwards. I assume someone decided to use it so I look fully only to discover no one was there and the buggy turned around moving to the empty spaces in a completely other row. Again, there was no wind. Parking lot was flat. There was no reason for what happened to happen, I suppose. I was caught off guard otherwise I would have filmed it.