Bentley's fastest ever production car, the GT Speed unveiled for the very first time at the Goodwood Festival of Speed 2012.

Modern-day Bentley boy, Juha Kankkunen, shows the outright performance of the 6-litre, 48-valve, four-cam, twin turbocharged W12 engine, driving up the famous Hillclimb for the first time.

Full throttle from the start line, on-board accelerometers measure and show the lateral and longitudinal g.