Pop-up sunshields do exist for back windscreens, I remember seeing one on an S-Class Mercedes back in 1995ish. I find it hard to believe that nobody in the car

Pop-up sunshields do exist for back windscreens, I remember seeing one on an S-Class Mercedes back in 1995ish. I find it hard to believe that nobody in the car industry has ever thought about putting one up front as well.