Mark Webber took the Porsche 919 around the sights of London this morning, with the new Panamera 4 E-Hybrid trailing behind before its world launch at the .<br>Welcome to Horsepower Hunters! This is the channel dedicated solely to finding and filming the most powerful machines this planet has to offer. Subscribe now .<br>We were lucky to see Mark Webber, the famous racing driver, driving the Le Mans-winning Porsche 919 Hybrid on the road, whilst filming for a Panamera .<br>In one of the most vibrant cities in the world, Porsche took innovation bred on the race track and brought it to the road. A perfect setting to put our intelligent .
