The new Bentley Mulsanne is the first all-new Bentley in around 80 years. And the details on the new car are stunning. Inside, 170 hours are dedicated to making the cockpit as sumptuous as possible. On the road, the 2.6-tonne Mulsanne makes steady progress. "The ultimate limousine you'll enjoy driving," as Vicky Parrott finds out in this video feature.