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New 2013 Bentley Continental GT Speed Convertible: Official

The Bentley Continental GT Speed Convertible, the drop top version of the GT Speed, has been officially revealed ahead of a Detroit Auto Show debut. Just as expected, Bentley has transplanted all the goodies from the latest version of the GT Speed in to the GTC Speed, which means a fulsome 616bhp and 590lb/ft of torque from the delicious 6.0 litre W12 and, despite gaining more than 200kg to keep the huge Bentley stiff without its roof, the GT Speed Convertible manages to hustle to 62mph in 4.1 seconds – just a tenth slower than the tin-top Speed. That extra lard does have more impact as you head towards 100mph with the convertible taking 0.7 seconds more, but there’s not exactly a paucity of power on offer.

Mazda to use regen brakes to boost fuel economy 5 to 10 percent

Mazda is adding a fuel-saving technology that harnesses wasted brake energy in the redesigned Mazda6 sedan due early next year. The approach uses regenerative braking to convert kinetic energy into electricity that is stored in a capacitor. The car later taps that capacitor to power the fuel pump, lights, audio, air conditioning and transmission and engine control systems.

Ferrari FF

Ferrari is set to unveil the all-new FF at the forthcoming Geneva motor show. The 612 replacement brings in a plethora of words not usually associated with the prancing horse. The FF, or 'Ferrari Four' is a four-seater, four-wheel-drive coupe that delivers a 'decisive break with the past', according to Ferrari.