by James Carson

Visitors to the this year’s Geneva Motor Show , which closed on Sunday evening,  may have noticed some signs that the times are changing: half of the space on Renault’s large exhibition stand was dedicated to battery-powered cars; new electric vehicle models were unveiled by BMW, Volkswagen and Kia and Porsche exhibited the Panamera S, a hybrid model able to travel for 20 miles on nothing but battery power.

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