Wash the car and while its still wet use a clay bar on it... any brand works the same, Mothers, Meguiar's, etc. all sell one, pick it up at your local autoparts/wax store or even at WalMart. the clay will take off brake dust residue like nobody's business and a bunch of other crap embedded in your paint that you don't even know about. After that, put a good coat of wax on it, and the dust won't stick nearly as bad... if it does, repeat the above steps. I used to work as a detailer at a dealership and new cars would come off the truck with a ton of "rail dust" from being transported on trains...the stuff was as rough as sandpaper and washing it wouldn't even begin to take it off, but clay made short work of it, so I know racing pad dust won't be a problem at all. -JB