They take a 958 Cayenne Turbo and modify it extensively with a widebody kit, front fascia, sideskirts, and rear bumper. The wheelbase remains unchanged but the rear doors are deleted. They also claim to upgrade the turbos and up the output of the motor to 670 horsepower.
How much for all of this? Oh just over half a million dollars. Someone might as well hand them a blank check for one of these. Certainly cool and different, but insanely priced with a lot of cars that make much more sense for that kind of coin. Don't expect to see one of these on the road anytime soon.