Multi-car Sun-shade

Every morning when driving to work there is this one spot on the highway where the sun is just peaking over the horizon, blinding everyone and causing even more congestion then there usually is, after the road takes a turn to the right everything is better and traffic picks up. Why not construct a series of tracks, similar to garage door tracks, over the highway that during the problem time of day a shade is automatically pulled over the tracks. These tracks would be in succession, one after another, for only about 800-1000ft over the problem area. It could be funded by corporate advertisements, a private group with fun ‘inspirational’ messages, or the transportation authority with messages like buckle-up. The shade would be a lightweight material, probably some kind of banner like that used on billboards, disposable, interchangeable, and pulled over the highway with some kind of electric motor/pully system. It could be meshed so as not to collect water, or just not pulled over the highway on rainy days, since if it’s overcast and raining the sun isn’t a problem anyways.