Xbox Live and the Achievement system kind of reinvented the high score list, letting you compete against your friends even when you're roaming solo through a stark, barren wasteland. It looks like Nissan is doing much the same with the Leaf -- but minus the bloatflies and the supermutants. As the cars are now rolling out to eager owners we're learning more about just what its Carwings system can do and another neat trick is the "Regional R
