If you wanted to see the 997 GT3 hitting 300 km/h (very fast actully) take a look at this video. It is in german, but you can hear the sound of the engine while the car speeds up to 300 km/h. Music to your ears.
Carrera 4 or Carrera 4S, Coupe or Convertible: Rinspeed is offering its aerodynamic package Indy for immediate deliveries. The original front skirt is replaced by a complete Rinspeed front skirt which enhnaces the aerodynamic down force. Side skirts let the 997 appear lower and more dynamic.