ok so after finally getting out our old power drill, cause the batteries on our Black & Decker work for like 2 min. and having the mothers power ball for about 2 months. i was able to clean my rims with the mother's ball after washing my car. and looking at the 15 years of water spots that have built up on my windows, most on the sunroof, and now more noticable after i got 5% tint. i remembered that i had heard that chrome cleaner and the power ball work great on glass. so i did a test on a small part of the back window. and clean and smooth. so i began the work in the whole car and all i have to say is Wawaweewa! . i got about 99% of the spots off and the glass has a waxed feel to it.

Just wanted to share

 

vinegar+water and a sponge has a similar effect


good to know though

 

You should just clay bar the whole car and the windows too. Never dull works well also.