Central Sun Visor

Sunvisors in cars work well when the sun is the right position relative to the car, but that is only about half the time. The other half of time when a sunvisor is needed they work poorly, if they work at all. What we need is one long sunvisor that is mounted on a central pivot that can be swung around through a complete circle so that it can provide shade in any direction. Likewise one should be able to extend it so it comes down farther, or retract it so that it does not obscure as much of the window.

I also want a shaded transparent dot, like a sunglass lens, that can be positioned to filter the headlights of oncoming cars.