I bet there is one specific tricky curve - it got the people in the sedan and then years later it got the poor kids in the Camero.
Divers found a car in a deep sink hole in Florida that was just past a tee inetersection with a stop sign. Run through the stop sign and you are in the water.
They removed the plates and it showed that the car belonged to an elderly man that had been missing for years. His bones were found in the car when they pulled the car up. He must have not seen the stop sign and drove through it. After that the state put up a barrier.
Myth busters tested escaping a sinking car but they missed the effects of the large amount of gasoline that escapes the tank and would be floating on the surface of the water inside the car. This would make it nearly impossible to see, breath, or to even hold your breath long enough to get out.
What a bad way to go.
Paul