Morning Corin - if'n I had to guess, I bet it was the repair crew cleaning up; they probably thought they were doing you a favor and saving you a trip to the landfill.
I thought about that, but I've got almost another truck load o'crap that's obviously for the landfill.
That and one of these was out by a tree and had fallen over. They left broken glass. They had to work to get to the other one.