I drive 40+ miles a day. Back at the end of August I applied 1 layer of BFWD to my white Honda Fit, after an overnight cure I topped it with Collinite 845. We had a terrible winter this year with more sand and salt used than I've seen in years. Today, 4/28/11, it rained hard (as it's been for weeks) and the beading on the car is nearly the same.