Which maker will sell most electric luxury cars by 2020? Take our Twitter poll

BMW i Vision Dynamics concept, 2017 Frankfurt Motor Show    [photo: Tom Moloughney]It has taken several years for European luxury makers to sort out what to do about the unexpected arrival of Tesla and its electric cars into a market they've dominated for decades. Sure, Lexus and a host of lesser Asian makes have competitive products somewhere between premium and luxury, but they're now a known quantity. The Tesla Model S...