Nissan Leaf progress, fast electric motorcycle charging, Audi plug-ins: Today’s Car News

BMW and Mercedes-Benz self-driving car conceptsAudi plans to introduce four new plug-in hybrids at next week's Geneva auto show. A drive in the Nissan Leaf Plus reveals how far electric cars have come in nine years. Electric motorcycle maker Zero has a novel way to get faster charging and longer trips on an electric bike. And German prosecutors fined BMW for its diesel emissions—but it...