Though well on its way to joining the Dodo, one of the internal combustion engine's advantages over its plug-in competition is refuel time -- it only takes a few minutes to gas up, but you're talking hours for an EV to top off its batteries via a standard 220 / 240-volt socket. This fact is not lost on Nissan, as it just revealed plans to offer a higher-rate charger in its 2012 Leaf -- the current mo