Hammond May and Clarkson go on a hunt to find the World's best roads in some of the world's best supercars. Lightweight cars are the winners, James May has a rough ride and Hammond finds a gem of a road in Switzerland. The hills are alive to the sound of horse power. Clarkson Hammond and May pack their suitcases and their Lamborghini Aston Martin and Vanquish supercars on an epic journey to find the best driving road in the world. Amazing views and fantastic driving terrain in this clip from BBC's Top Gear.