Tesla Should Be Afraid of the Germans

At the Frankfurt Motor Show, which will run until the end of next week, all four top German luxury car producers -- Volkswagen's Audi and Porsche, Bayerische Motoren Werke and Daimler -- stressed electric models, some of them explicitly meant to be "Tesla killers." To be sure, most of these cars are still concepts, and they won't make it to market before 2018, but given Tesla's sales trajectory, there's no need for its competitors to rush.