By PCA DE instructor do you mean you are a Porsche PDE instructor in Birmingham. I took the 2 day performance driving course there and I'm taking the Masters Class this year. It was an amazing experience and I learned a great deal not to mention the fact that i had allot of fun. All the instructors were great. I also prefer the X5 to the Cayenne other than the Turbo but that's over $100,000.

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Porsche 996 Turbo (Ruf 550)
Porsche 993 Cab.
Porsche 997 GT3
Audi A8
BMW X5 4.8 White, Black Napa, Sport, Technology, Premium, Prem. Sound, Cold Weather, Rear Climate, Multi-Contour, Sirius, HD Radio, Running Bds., Bamboo