Transition windows

Provide all window glass with the same as personal eyeglasses.......transition lens glass. This would make driving safer. As the sun shines, the window glass would darken, and the visor would be unnecessary.
Brett M 07/07/2014
Best idea I've ever heard! This would allow you to have un-tinted windows at night which would allow clear vision and bright vision at night, and protecting vision during the day.