The coupé made its debut at this week’s Geneva Motor Show, and is the work of coachbuilder Zagato, from Milan. The car started life as a Bentley Continental GT Speed, but you’re unlikely to confuse it with the standard model, thanks to a wide range of unique styling changes. From the front, its headlamps and massive mesh grille are pure Bentley, but the all-new bumper and long bonnet vents provide the hand-built Zagato-bodied version with a much more dramatic look. A pair of front foglamps and 10-spoke alloy wheels add to the visual impact.Traditional Zagato touches include a double-bubble roof and a neatly rounded tail. A host of functional parts have been carried over from the production car, but the slab-sided looks of the Continental GT have been dropped in favour of a much curvier body shape. Integrated light clusters sit flush with the surrounding bodywork at the rear, and the GTZ features an unusual two-tone green and silver paint finish. Its leather wrapped interior is also colour-coded to match the hand-painted exterior.Power comes from the same 600bhp W12 engine as the GT Speed, so the Zagato’s performance is impressive. The 0-60mph sprint in the standard car takes only 4.3 seconds, while top speed is 202mph.This isn’t that the first time the Italian firm has redesigned a luxurious British grand tourer for the super-rich. Zagato has a long history of working with British car makers, such as Aston Martin, while other collaborations with foreign firms include the Ferrari 575 GTZ from 2006 and the one-off Maserati GS Zagato, which was unveiled last year.