Mistake

So, I downloaded from my camera to see what I might have as a blip for today and the very first image is what you see above. "What is that?" I wonder; "Did I shoot that?"??? I check the time stamp to be sure and it is only 26 seconds before my next legitimate shot. Now that I think about it, I kind of vaguely remember shooting something quickly in traffic without really looking...but still - that would be like my shoe or the car window or something?!

Well, if anyone has any guesses as to how this happened I'd love to hear it.