Also if you are really serious about keeping your car's finish nice, do not clean your car with anything other than 100% american cotton towels. NOT foreign cotton since they may contain small percentages of man-made fibers that could scratch your finish. I recommend white cotton towels, not diapers for the same reason as foreign cotton and not the wash rags sold in Walmart.

Secondly get yourself a car cover. A good car cover, especially if you have cats personally or have them in your neighborhood. Again not a cheap car cover. Check out california car covers for a good selection for all models of all types of material depending on the protection you need.