I don't know how you kept your cool...I think I would have killed the idiot.
GT's and exotics are a rare site around these parts...every time I get mine out someone does something stupid. My wife was following me home one day and a car load of kids just about took her out from the rear in an attempt to pass her and get up close to my car. For the most part I ignore people if they appear to be asshats and if conditions are safe I will out accelerate someone to get away from them. Most of them just want to see it go fast...I haven't had anyone want to try to race but I'm sure it will happen. These kids play XBOX and think they can drive a real car that way.
Recently my son had some friends over for his 15th birthday. About 10 of them spent the night. They were hanging out in the garage after having a bonfire down by the river. I was a bit nervous about them being around the GT but decided to relax. When they came inside I went out to the garage to check the car. One of the idiot kids had leaned up against the car and put his greasy pizza and Doritos covered hands all over the fender. I was not happy. Luckily there were no scratches or anything in the paint. With them having been down at the river I was just picturing some kids pants covered in sand up against my car. I told all of them that no one is to be near that car for the rest of the night. Told my boy I could absolutely not believe he'd let someone sit up against that car. It's probably a good thing I didn't walk out there when he was leaning on it. Hate being a prick, but who in their right mind leans up against a car like that? I don't even lean on my 2005 F-250. A neighbor kid was down at our house talking to our daughter. He was leaning up against my Cobra when I walked outside. I told him I wouldn't lean on his cars at his house and he better get his ass off of mine. Daughter got chewed out for that one as well. Neighbor kids don't like me much but I don't put up with any crap. People just don't have any respect for others property anymore. God forbid I ever catch someone posing on it or against it someplace in public.
458 is such a sweet car...probably my favorite...maybe someday I'll be able to afford one. We are in China right now on business and we were passed by a black one on the highway the other day. Jesus it sounded good.