My wife just got me the Mr Clean AutoDry Car Wash for father's day. I just used it and, let me just say, it is wonderful. I live in an area with pretty hard water and had a hard time keeping off water spots, even with careful drying. After I used my "new toy" not a single water spot to be found. I highly recommend it.
Plus it was a lot quicker than the the old way.
Plus it was a lot quicker than the the old way.