I was driving and it was running pretty good. Been raining for about 20 min and i passed a self car wash and about 5 cars were being washed.Now they have to start washing during rain as it dont' take 20 min to wash a car. Any secret of why its good to wash a car during rain. I was under immpresion the rain is dirty so that is why u should wash the car after the rain instead of before or during the rain.