No, this is NOT a clip from Forza 5.
The Ferrari FXX K is a monstrously powerful track car version of the street legal LaFerrari. The brainchild of auto designer Flavio Manzoni, the FXX K is powered by the the same mild hybrid power plant used in the LaFerrari that mates Ferrari's KERS system with a 6.3- liter V12. The main difference between the two cars is that the FXX K's output is 1035 hp and 664 lb-ft of torque in comparison to the 950 hp and 664 lb-ft produced by the LaFerrari.
It's practically an engineering miracle that the car is capable of handling such an massive power output. Moreover, the FXX K comes with an equally impressive stopping power. Check out what happens to the brakes when this beast goes from a full open throttle acceleration to a slow crawl.