BMW 4 Series Coupe concept premieres in Detroit

The BMW 4 Series Coupe concept� has been unveiled in the flesh for the first time at the North American international auto show in Detroit. The BMW 4 Series Coupe concept �?"� first revealed in December last year �?"� provides a strong indication of what the next fourth-generation BMW 3 Series coupe will look like. While technically not a production model (powertrain details remain