everynight for the past 4 weeks she has been acting very wierd...she comes home late everynight and claims she was busy at work.. we dont talk as much anymore and I feel like we are very distant from each other...it seems like she is more like a roommate than my girl...anyhow, recently things got worse.. she has been getting dropped off when she returns home..I confronted her and she claims that it was her project partner from work, which I dont believe....I am a very good friend with her project partner and dont think he will do such a thing...I know what car he drives (5 series) so I have to found out the truth myself.....last night I hid behind my supra which was parked on my driveway and waited for her arrival..after 40 minutes I heard a car slowly pulled into my driveway and that is when I noticed some rusting on the undercarriage of my supras rear left fender...I just need to know whether the rust will buff right off or I need to bring it into a detail specialist?