BTW, other stories called it various things: a wreck, a crash, etc.
Some people just got fixated on "collision."
The point is that others were reading news stories that proported to be factual when they were not.
One should not blame the reader who has reason to believe he is reading accurate information. The only story I saw was the one quoted in my message above in which the word collision appeared.
In reference to the requirement or lack thereof that the first witness or person to the scene stop and render aid, check this link, very bottom of the main body of text.
http://www.wral.com/news/2611927/detail.html
The person who made this particular 911 call really should feel bad. "ditch" was a lousy choice of words and a few minutes at the scene might have made a difference. Some people die quick in the water and some can be revived after several minutes. It would depend on how much air was trapped in the car and how intact the structure of the car was.