No accidents, but I watched a kid smash his head into the window as I signaled to turn away. I have "The Bat Signal" hooked into my rear turn signals. They flash down on the road beside the tires and are about 18 inches across and quite bright, so very visible.
He was already excited about the Sling, and when that happened, he was caught so off guard he simply smashed his head into the window trying to look at it.
Last thing I saw as I pulled away was him holding one hand over his head while pointing at me with the other one.