Along with General Motors reporting the company’s highest overall sales month since September 2008, the Chevrolet Volt’s sales crested higher to 1,607 units sold in May compared to 1,306 units sold in April. May’s results do however lag 4.3-percent behind the Volt’s May 2012 score of 1,680 units sold, and follow Nissan’s all-electric Leaf’s May […]

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