This past January , I purchased a 2008 View from Florida, there is something about the fl. weather that causes the glass to etch, maybe its the ocean salt it's not water spots we are talking about,that is easy to solve.
I tried everything I could imagine , then it dawned on me i had the fix after all. It's from Zaino brothers, it's called CLEAR-VIEW GLASS POLISH.
It removes acid rain and water spots. Follow the instructions and scrub hard.
I applied it by hand ,you can use a buffer if you wish.
This stuff is not cheap ,but it doe's the job.
I 'm new to this site ,and don't know how to attach pics ,or i would show the before and after pics.
They have a full line of automotive products.
Their web site is :Zaino Store