> ... look at the head of the driver that is approaching or has stopped. That isn't really that possible these days. Car windshields are steeply inclined for b

> ... look at the head of the driver that is approaching or has stopped. That isn't really that possible these days. Car windshields are steeply inclined for better fuel economy which better reflects light. Smoked windows are now popular so that the interior of the car is relatively dark. If you look at the windshield of an approaching car you usually just see the sky.