Depending on the type of water, this can be a tough job.
Some of the products other people have found valuable are Rain-X (to protect before the spots happen), Spot-X, C-30 Water Spot remover, Zaino Z-12 Clear-View Glass Polish, Mr Clean - Magic Eraser, Mothers Chrome polish, 3m microfinishing compound, Spot Not, clay bar, Mr Clean Autodry sprayer, Invisible glass, PPG's Aquapel
Other people recommend fine steel wool or a glass polishing kit.
Some of the causes of water spots are hard water, parking next to a sprinkler, or washing your car in the direct sunlight.
(Note PPG was purchased by Trico Products and is now called Trico View - see below)
Video: How do you remove water spots from a car windshield?To remove a sodium silicate solution from a car windshield, you can first try washing the windshield with a mixture of water and vinegar. Scrub gently with a sponge or soft cloth. If this doesn't work, you can try using a glass cleaner or a commercial windshield cleaner.
The places in between your windows, and front and back windshield.
Pouring hot water on a cold windshield can cause it to crack due to sudden temperature change. It is best to use lukewarm water or a de-icer solution specifically designed for car windshields to safely remove ice.
To quickly and effectively remove frost from your windshield, you can use a mixture of vinegar and water, a commercial de-icer spray, or a windshield scraper. Simply spray or apply the solution to the frost and use the scraper to gently remove it. Additionally, you can turn on your car's defroster to help speed up the process.
white vinagar or a scratch remover wax. good example meguairs scratchx
Rule of thumb, if you can feel the scratch with your fingernail, it ain't coming out, replace the windshield.
Windshield replacement is done at a car repair store. The technician will remove the broken windshield, and insert a new one that you have purchased.
The Weather Channel Weekend View - 2006 How to Remove Ice from Your Car Windshield was released on: USA: 5 January 2014
You might try disolving 3 tablespoons of baking soda in a bucket of warm water; lightly sponge on vehicle , rinse then wash. be sure to towel dry to avoid new spotting. If spots have already etched into finish this will not remove them
Technically, you don't "drive" through a car was, the car is in neutral and you are moved through. But, as for your question, if the windshield is cracked enough for water to get through, I wouldn't do it.
painting it over black
you have to take of the doors and windshield in order to take off the dashboard on a two person car