I have the same problem (2001 v6 electric green). My bumper looks awful. Good tip from Aquacop! I'll need to try it. I think I follow to closely and the streets in Tulsa are horrible.
It's those little bruises from someone hitting you car with their door that really piss me off. I swear I'm going to start carrying around a baseball bat and the next person that tags my car...
Has anyone tried a bra (for your car

)? Do they work? Won't the uncovered paint fade and underneath not?
I just continue waxing and polishing ever so diligently, praying she will be protected.