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The ultimate sports sedan has had a “green” makeover, with the 2014 Porsche Panamera S E-Hybrid. Enjoy the perks of a Porsche with your eco-conscious in tact, for this boasts a 95hp electric motor with a range of 20 miles and a top speed of 84 miles per hour. When that runs dry, switch to the 3-liter twin turbo V6 that will do 167 mph, the first 60 in just over five seconds. That bit’s not so green, though.