Here is great video from Fifth Gear with guest 24 Year old Brazilian Bruno Senna (Ayrton Senna’s Nephew) who test drives the Nissan GT-R vs Porsche 911 Turbo. Can you guess which car is 0.5 seconds faster around the track? UNREAL!

No doubt two of the finest drivers the world has ever seen. These two go head-to-head at karting. The speeds are not nearly as fast and the vehicles aren't as cool, but the action is intense as the karts are pushed for everything they have.

Through the modern history of the sport, though one team or driver may dominate the pack, the path to victory is rarely so clear. Rivalries often run rampant in the highly competitive high-speed world and with Michael Schumacher out of the picture, Formula One fans are doubtlessly salivating at the prospect of another mano e mano battle for the 2007 championship.

Michael Schumacher grabbed his 66th career pole position at the San Marino Grand Prix at Imola to break the late Ayrton Senna's all-time record. It was the only major record that he had not yet claimed.