Potential car seat problems!!

Ida • Just a very excited first time mom ☺️
I have a two door car and most two door cars have slanted low rear windows... So direct sunlight is coming and more than likely hitting the baby directly... Does anyone know a product that can help me with this problem??? One that can hang from the window that will still give me visibility to see out the back?? I really don't want anything that covers the car seat because I won't beable to see him....