Anyone know if there is a film on the outside of the windshield? I had a bird the size of a B-1 drop a large splat of you-know-what on the top corner of my parked in the sun, freshly washed car. I took a wet towel to it and left fine scratches on the glass. Also when you wet the windshield a "square" section of what I cleaned is more transparent than the rest of the windshield. My girl has been violated - what did I do??