Unfortunately it happens, more often than anyone is willing to admit. I personally have been hit by those wonderful wide mirrors on those ultrawide pickups before while way off on the shoulder. The motorist thought it would be funny I guess. I wound up with a broken rib from that as well as many scapes and bruises from the crash. My bike was damaged and it all cost me a pretty penny, but the cops didn't see a thing and they did DO a thing either. Now I protect myself, I'll leave it to your imagination as to HOW I do that.