There are several products that are good for removing water spots on glass (Zaino, DP).  Many of them are effective by hand, but it really helps to invest in a random orbital buffer.  That being said, depending on what's caused the water spots and how long they've been negelcted, they can etch the glass and may be next to impossible to remove.  As far as the paint surface, a claybar may help to remove the water spots, but again I would suggest a random orbital buffer.  Clay is great for picking up imperfections in the paint (brake dust, rail dust, metal fragments, etc.) but often the "water spots" are etched into the paint surface.  A polish or swirl remover probably won't do much to hide them.  What you are actually doing with a good machine polish (or, the rubbing compound you are using by hand) is removing the affected surface of the clear coat (or paint itself, with the older single stages).  I obviously wouldn't recommend it every time you wash your car, but for damaged or neglected paint it really makes a difference.  Let me know if you have any more questions, I've got tons of links and info on this stuff     PSU 982007-03-31 09:25:38

I you wash your car get the mr.clean wash gun thing.The last stage of rinsing is what does not allow water spots.That and rain-x on a regular basis will work at keeping more spots from forming.This thread might be good for a sticky.

I haven't seen anyone mention diatomaceous earth yet. A buddy of mine owns a custom paint shop and handed me a small baggy of the white powder used in swimming pool filters after painting the wifes 78. He showed me how to clean up the windows. What I thought was permanent, came right off. It looked like new glass. I believe he sprinkled some on a damp rag and worked it in a small circular motion, I was stunned. I'll ask him in more detail and report back ASAP.

My buddies name is Ole Thygesen and came upon this method in his 20 yrs. in the business. It works very well. He says to just work small areas at a time and don't be impatient. It seems to me the big trick to this method is just to be able to find small amounts of diatomaceous earth. When I looked for it all I could find was in a large box.aceinthehole2007-03-31 15:12:43

I have to figure out something. My wifes car and my to work runner has spots I sure would like to get ride of. The Vette just got a new windshield, so no spots there, and the door glass is clear.

[QUOTE=OlrustysGhost]I have to figure out something. My wifes car and my to work runner has spots I sure would like to get ride of. The Vette just got a new windshield, so no spots there, and the door glass is clear. [/QUOTE] Get some rain-x.I'm telling ya that stuff prevents waterspots great.

Thanks everyone for the information, I learned a bunch of new stuff.  I will try the clay bar and let you know how it works.......steve

I bought Rainx yesterday, I'll see what SPOT remover I can find to get rid of the SPOTS I now have in ylvania.  Haw, ...Sometimes It just happens.

I obviously don't have the spotting problem that some of youse guys do, but I used the clay bar, followed by a WINDEX cleaning, followed by RAIN-X . . . and the windshield looks like NEW!  Worked for me.