D1 Grand Prix is a sport, which is judged, based on who has the coolest and radical drifting performance style.  Drifting is a way of driving that force the rear tires and/or all 4 tires slide while controlling the pass of forward motion.  The steering wheel is turning to the same side of the sliding direction, and drivers are to control the vehicle in extreme speed, often exceeding 120mph, and driving conditions. 

Drifting is an extremely difficult driving style that requires high level of skills and techniques.  It?s very amusing to watch each driver?s performance as well.  In addition, unlike Rally and other motor sports, the determination of winner/loser is largely based on driver's skill instead of the machine advantages.  D1 Grand Prix is all about the rivalry of each driver?s drifting skill.