Just as we all know, the test drivers always smile the biggest when they drive the isf- hear that 4000rpm growl. What a good move by the engineers to pay attention to throttle sound!
http://www.youtube.com/watch?v=oO9_9xdwWWc&NR=1
http://www.youtube.com/watch?v=oO9_9xdwWWc&NR=1