The Porsche PDK system is a revolutionary new dual-clutch transmission that gives does lightning fast shifts without the need to move your left foot. That's not the only cool trick up the new Carerra's sleeve when equipped with PDK. The guys at Garage 419 found out from Porsche engineers that front-wheel drive can be disabled entirely by lifting up the parking brake a single notch. Once you lift up that brake, the four-wheel-drive Carerra 4 becomes a Carrera 2 and power slides and donuts are yours to discover. Follow the jump to view Garage 419's video review of the new 997. News about the front-drive shutoff is available at the two-minute mark, but the entire video is worth watching. You can check out our own first drive of the Porsche Carrera with PDK by clicking here.