After several lackluster years, Nissan North America has sold more of its electric cars in six months than it did all of last year. More than 98-hundred LEAFs were sold and it allows Nissan to stop charging so much for the battery-powered cars. A car that has no extras, like navigation, is now offered for a $199 a month lease. Company officials say moving production of the vehicles from Japan to the Smyrna plant also saved some money on shipping costs and unfavorable exchange rates.