Hit by car while running. Injuries were to my right forearm (which I initially feared might be broken, but wasn't) and the lower right side of my rib cage (which at first didn't seem to be as serious as the arm injury, but has lingered much longer). As of Sept. 22, I find that any running at all, and also apparently significant walking, aggravates the soreness.
Cause was a very careless driver, hitting me when I was on a wide shoulder! Lesson (to me) is to pay attention to traffic, even when the shoulder is wide enough that there seems to be no real danger.