( http://www.TFLcar.com ) The 2012 Jaguar XKR-S is the fastest and most powerful road going car that Jaguar has ever built and that's according to the company. And yes it is even quicker than the 1992--94  XJ220 super car. So what makes the XKR-S the quickest Jaguar ever? In this speedy technology demonstration we take a closer look at the car to find out what Jaguar did to make the 2012 Jaguar XKR-S such a British monster speed demon.