My BIL had a head on I-30 in Dallas on his way to a Morning run at White Rock Lake about five years ago about 4:30am. He's a marathon runner and raises millions for a charity every year. My better half and I once ran the NYC with his group. Anyway, someone came on to the highway going the wrong way, he topped a rise and could not avoid her...He was badly injured as both cars were traveling at a high rate of speed. He told my wife that some man showed up just then, like immediately after his car came to a stop and spoke with him that he was going to be ok and that help would arrive soon. Then he said, the man seemed to just vanish. Guardian Angles? I think so...but can't prove anything. It's nice to believe thought that a God cares for us enough to do that sort of thing. Even when we don't fully believe or understand, maybe especially then.