I can't quite match the Ferrari 355 noise posted elsewhere in this section but here are some sounds from inside the cabin of my Porsche Cayman S. It's not being thrashed in these recordings but I do hope to get some done when it's being taken to the red line.
The recording equipment was an iRiver H140 and a Sony ECM-917 electret condenser microphone. The microphone was located near my headrest so it's pretty much exactly what I hear.
Porsche Cayman S - soundfile 1 (MP3 format)
Porsche Cayman S - soundfile 2 (MP3 format)
Porsche Cayman S - soundfile 3 (MP3 format)