A windshield can get like this if one of two things happens:
1) It became pitted by sand. If so, it would have been clear when new and gradually got cloudier as time when on. If the windshield is plastic, then you might be able to restore it using some very fine polishing compound. You might investigate brass polishing paste or car wax compounds that include very fine abrasive to remove oxidized paint. If the windshield is glass, you would probably be better off replacing it as restoring clarity by hand-polishing would be extremely labor intensive.
2) It became cloudy when a piece of pressure sensitive adhesive was removed. For example, you may have had some tinted film on the windshield, held on by pressure sensitive adhesive. If some of the adhesive were left behind when the film was removed, it would make the windshield look cloudy. An auto repair store should have some solvent designed for adhesive removal. The stuff I have used works fairly well with a little elbow grease.
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by: GrahamSkanPosted on 2007-12-23 at 07:42:51ID: 20521764
There isn't anything wrong with it. It's a 'feature'. The property wasn't in the original design, but was discovered too late to change, so will now be carried forward into later versions for backward compatability.
It is a benefit because vision improves in bad weather, just when you need it.