When I took posession of my new Murano several weeks ago I looked over the car in what I thought was a good manner. Not having driven it much in the first two weeks (twice actually) I finally gave it's first good washing yesterday. Much to my surprise and dismay I discovered on the roof in several places, long straight scratches running across the front almost to the windshield and down one side. There were also several straight scratches surrounding the antenna. It looks as if these scratches did not penetrate the clear-coat and they looked as if they looked as if they could have been done by a box-cutter or something with sharp edge. What the heck do any of you think happened and more importantly what is the smart way to possibly polish these out? Thanks for any advice.