Cloudy speedometer

I just bought a 2006 Prius with 164K miles on it, the one thing that has been driving me nuts is the plexi glass that the display reflects through is very cloudy and has some minor scuffing on it. I originally tried cleaning it with windex and a microfiber cloth... big mistake, it made the cloudiness much worse! after searching online I found very little other than a few threads about people getting condensation in the area. So after a couple days of trying multiple cleaning products I went with some aircraft grade window cleaner/ plastic cleaner. NOVUS 3 step formula... It worked like a charm.. restored the plexi screen to a very clear finish! Its like a breath of fresh air looking at the speedo and having a clear view of it. Just thought I would share in case anyone else has this issue. Cheers!