Has anybody used Rain-X or something similar on their cameras? If so, did you use the one for glass or plastic? I was driving in the rain today and big fat rain drops stopped right in the middle of the driver's side mirror camera and backup camera making them both useless. I know I can still use the mirrors and turn around to look behind me, but it's a tight squeeze to get into my driveway. I have a big pickup truck across the street directly in front of the driveway, a telephone pole on one side and a car parked on the street right at the edge of the driveway on the other. The cameras make it effortless to back in.