Oprah may have left town and packed up her "You get a car!" philanthropic ways, but that's not stopping Nissan from injecting the windy city with a little auto excitement. Responding to an overwhelming customer demand for its all-electric Leaf vehicles, the Japanese car maker is accelerating the line's rollout to Chicago residents, with the first models to be available this fall. The launch will be bolstered by a planned 280 EV charging statio