Further north the vehicles don't rust as bad because they can't use salt or other chemicals anymore, they aren't effective below a certain temperature. Colorado vehicles usually aren't too bad either, they just seem to dump sand/gravel down instead.

My 05 is destroyed, it's really discouraging. It was clean until around the end of 2013 and then fell apart all at once. Large holes on the passenger side, bubbles on the driver's side, holes in the quarter panel area behind the wheel, tons of bubbles in the rear bumper, the edges of the rear doors, the frame crossmember by the spare tire....and my rocker panel on the passenger side front has large holes in it too.