When Bob is first driving Penny from the airport, the view out of the back window of the car shows that he is clearly driving into oncoming traffic. The other cars going in his direction are on the other side of the median and the cars in the lanes next to him are going in the opposite direction from him.
When the policeman is telling Mrs. Abblebee and Bob about the car accident, he says the car was found in 30 feet of water. When we see the car in the water, it is just below the surface.