Tech, Torque, and Adrenaline. That pretty much sums up the 2014 Ron Tonkin Gran Turismo's exotic car track day at Portland International Raceway. Our most epic day of filming to date, and how could it not be with subjects like these! We are proud to present the Audi R8 which dominated the track all day. Plenty of more footage to come! Enjoy and as always, Go Big!