Wow thats alot of information. Ok, but what I can grasp is that a car cover should be used whenever the car is not in use. Also that a good car cover will prevent bird poo from baking in, dirt from sticking, UV protection and rain as well. Basically keep a clean car clean. My Z is a DD and the only cover I have is OEM, so it looks like I will have to purchase a Technalon cover. THANKS GUYS