I have a 2005 black prius. It is my first black car, and I wanted black because IMO no other color looks as nice when the car is clean. I have no issues with the work involved in the weekly washings, etc, but I've had some trouble with my washes. My main problem is that I've noticed a few very faint scratches that I believe resulted from me washing the car and the tools I use. Granted on a silver Prius you probably wouldn't see them, but they are noticable on black if you look for them. I typically use a wash mit to clean the car (bought it from a BMW dealer for my wife's car a year ago), and I use a clean water bucket for rinsing the mit between loads from a bucket that is a soap-water mix. Any words of advice? I've completely unfamilar with high end car washing techniques, really never researched it. What works for you? Is there any hope for me to somehow buff out the scraches? They aren't terrible, but I feel terrible about them because I'm pretty sure they are a result from me cleaning the car.