The glass in my windshield has these stains that can only be seen at night, either when there's light shining and/or it's raining.
I bought three products at pepboys that are supposed to clean glass/windshields, but they didn't work for this type of stain.
The weird thing is that you can't feel it in the glass, it's almost as if it is part of the glass.
Does anyone know what it is and how I can remove it? I'm including a picture.