Forget it. (Score 1)

Wait... so if the windshield is constructed in a way that it fluoresces, wouldn't skylight, mercury vapor lamps, and other UV abundant light sources affect the windshield? And we'll need brighter headlights to balance out the HUD display. (darn headlights are bright enough today) Besides, if people have poor enough vision that they rely on a HUD, they really shouldn't be driving.