I was on a back road coming home a few years ago and was greeted with the site of a Jeep Cherokee flying through the air. When the front hit it then rolled 3 times before coming to a stop. It had run off the road into a ditch and hit where a driveway crossed.
I stopped and a car coming the other direction stopped. When the two of us got to the jeep which was destroyed but right side up we didn't see the driver so we assumed they had been ejected. We started to look in a wider area.
Another car had stopped and they found the driver, who was now in the back seat totally covered with car parts and junk. We managed to get the door open to get access to him. Luckily the driver of the 3rd car was an ER nurse or I would of been the one with the most medical training.
The driver was already grey at that point, he'd suffered some sort of medical issue probably a while before he crashed. The nurse started CPR and we waited.
8 minutes after the 911 call - the local reported showed up.
11 minutes after - a deputy arrived
17 minutes after - finally the paramedics got there
At this point they called life flight in which was another 40 minutes before they arrived and picked an LZ.