Polished cloudy scratches out of rear plastic window with Bluemagic headlight lens restorer. Worked really well. Before I had a 3" square area that was opaque, right in the center of the window caused by rubbing against the convertible top lever. Now, while you can still see the spot, you can actually see through it.
https://www.amazon.com/Blue-Magic-725CD-06-Headlight-Restorer/dp/B001PH0WUU/
