Maybe this is a stupid question, but how long should you wait after driving your car to wash/wax the car? I was always taught that the car needs to be cool before you can wash it since a hot car being hit with cold water is bad, not to mention cold water on hot rotors can cause warping of your rotors (I did it once before when I was in a rush and my rotors started sizzling and smoking from the cold water coming in contact with the hot rotors). Then my friend asked me a good question ... "What happens when it rains then?" ... To which I have no good answer. Just curious what your take is on it!!!