WHatever you do.....DON"T use a cal duster on the car. They have the tendency to leave streak marks in the clear due to it not having any lube in it. NEVER wipe a a car with a dry rag if you can avoid it. I use detail spray with high quality microfiber towels, and if it's really dusty, blow it off first with an air gun. Trust me, black cars are hard to keep any blemishes off of.