http://www.excellence-mag.com/art1/art1p1.html

Preview of the new 911 Turbo. Apologies if it has been posted before.

Interesting fact, variable turbine geometry has been used before in a petrol car! It only had 170bhp, but it was VTG none the less (actually variable nozzle turbo.)

http://www.xmission.com/~dempsey/shelby/sheldod9.htm

I'm guessing Porsche's real success here has been adapting this technology for high horsepower (read as: heat) usage.