I was driving throught the parking lot of my wifes work and heard and thought I felt a scraping sound like the exhaust was scraping on a speed bump or something. At first I thought I must have driven over one of those storm drain things and then hit a bump and scraped something, but then it happend again on every little bump I hit. I was only going about 5 to 10 MPH. I immediatly pulled into a parking space thinking that something had come loose and was draging on the ground. I got out and looked underneath and there was nothing. My wife saw me and walked over and asked what I was doing, I explained it to her. She didnt see anything hanging down either and its really really clean under there. The car only has 9700 miles on it and I got it with about 9400. I was told that the previous owner had some other kind of exhaust on there and other performance parts but put the stock back on it before trade in, it looks like thats true because the exhaust looks perfect. After seeing nothing under the car I drove around the parking lot again and could only get it to happen a tiny bit once more and then nothing, I have not been able to repeat it. I went to the grocery store parking lot and drove over speed bumps and it didn't make the noise. I am afraid something is going to break now, I guess I could take it to the dealer, but unless I can reproduce the sound they are going to just keep the car for a day and tell me they can't find anything wrong. I was on a pretty steep hill going down just before I turned into the parking lot. Could the suspension be hitting something or the exhaust? Should I jack it up and look for some signs of wear? and where? Thanks for any replies in advance. I love driving this car but I don't want to drive like a grandma in fear of breaking something.