Just watched these videos of a Caterham kicking the backside of a 911 gt2, really shows how much effort goes into driving at the limit, watching these gave me even more respect for racing drivers in all classes motorsport.
http://www.pistonheads.com/news/default.asp?storyId=26008
http://www.pistonheads.com/news/default.asp?storyId=26008