"I have never driven into a river or down an impassable road"
Common sense .... so true! Couple months ago my GPS sent me over a cow-pastured ridge on a dirt road, down an impassable road completely covered with 3 inches of water and ... I stopped when it wanted me to go through the river blocking the route. Finally realized that the GPS can be wrong, especially in the rural Tennessee/Virginia border area. Common sense finally prevailed & I didn't get stuck. With my wife and one of the kids in the car, it would have been a bit awkward... BTW, when I checked, Google Maps also had the same road as my GPS, it's wrong also, although the satellite view shows accurately the small river that was the road, and the larger river I decided not to chuck the SUV in.