Where I live, in central Texas, it can get ridiculously hot sometimes! Summers usually peak at around 105 or more most days. Even this winter has been unusually warm with the average temperatures a picture perfect high 70's usually. Since I have a black car, it can get extremely hot in there! I make sure to have seat covers and a steering wheel cover to help, but I've desperately been needing a good windshield shade.
If you have a hot car you need to protect, you can get your own set here: