Thank you. It seems like a reported "crash" is in all three reports. A crash implies to me more than running off the road, a contact between a car and something outside that car. Another car or object (tree, guard rail, debris). And I think it's interesting that someone --unknown?--called 911. Maybe that car was responsible or involved somehow in the car running off the road and didn't want to get involved, but a flicker of conscience led them to call 911. Wouldn't that person's number show up in their records? But poor reporting can hide the actual details, so I guess it's too early to tell what happened. A real tragedy, though.
Nobody has reported any other car being involved.