+1 - I clay bar'd my mark for the first time 2 or 3 weeks ago. It made the paint real smooth and took off a lot of debris on the rocker panels from the roads. I used Meguiars Clay Bar Kit (comes with 2 clay bars, a spray detailer and a microfiber cloth) It took me awhile to clay bar my car but it was well worth it. One warning though, if you drop the clay bar on the floor do not put it back on your paint or you'll scratch the crap out of it. Just throw it out and open up the 2nd one. Back to the black box. I bought it last summer as i was looking for a wax specifically for black cars. I've used turtle wax color magic(for black cars) before and it works really well. The black box will make your car look clear as day and really look awesome in plain english, but it is like a 5-7 hour process. Try and use a buffing wheel when you put the carnauba wax on, i did it by hand and learned the hard way. Took me over an hour to take off lol. Long post but i've been wondering when someone was going to ask about this kit. Good luck with it, and try to do it in a spot out of direct sunlight.