Just because a pedestrian is looking in your direction, it doesn't mean they can actually meet your gaze. I don't drive and always try to make eye contact with drivers, but tinted windows and windshield glare often make it impossible in reality.

So I will stare at where I know the driver's face ought to be, but I can't actually tell whether they have seen me. Tinted windows darken the inside of the car and that makes windshield glare all I can actually see.