Couple of years ago took my NSX to a track event at Mid-Ohio. I had removed my windshield wipers years earlier because, well i'm a low weight NUT i'm told. But anyway it started raining at the track and put a couple of layers of RainX on the windshield. Streaked the car on the way home and seemed to work it's way into the Zymol Titanium wax. Since i also picked up about a thousand tiny spots of vaporized rubber from the guy in front of me i had to polish the entire car, even though i had just polished it. Used 3m perfect it and P21S and had all kinds of H with it as the RainX was still finding it's way into the wax even though i prepsolled the whole vehicle pretty well. I think i still have this crap on my windshield. Is there anything short of polishing that will take it off! My car is black. This problem would likely not be noticed on lighter colors. Users beware. TIA