While 9ff Fahrzeugtechnik GmbH thinks their GT9 is the fastest car in the world , the rest of the world knows that Guinness World Records officially recognizes the 2008 SSC Ultimate Aero as the fastest road-legal car in the world.  Powered by a 1183-hp engine with a peak torque of 1094 lb-ft, the SSC Ultimate Aero does 0-60 in 2.8 seconds with a top speed of 257mph.

Jay Leno recently had the chance to test drive the SSC Ultimate Aero. Check out his review of the fastest car in the world in this latest episode of Jay Leno’s Garage.

Click through for the video .

SSC Ultimate Aero :