It sounds like the moronosphere is as dense out there is it is here. I have never had a Porsche do that to me. Around here it is Subaru Outback wagons, usually with Obama stickers on them. After a few days of driving like a victim in my 944, I go hunting Subaru's in my Jeep. It is not so much an act of active hunting as a lack of moving out of their way. It is very theraputic. I usually feel better after a couple of hours of pissing them off. I have had a few actually try to run me off the road. I just smile and wave (with all my fingers). It is very hard to be intimidated in a car that I built the fenders for out of tube and 1/4" plate.
The armored beast.
It was quite a paradigm shift to start driving this.