Lincoln is pulling the wraps off a head-turning new concept car at the North American International Auto Show next week, signaling its design strategy for the next-generation of premium American vehicles and launching a new engine family. The Lincoln MKR concept introduces a new design language of "elegant simplicity" on a four-door coupe that also features environmentally friendly amenities and fuel-saving technology, including its TwinForce(TM) engine. The concept's 3.5-liter gasoline twin-turbocharged direct-injection V-6 performs comparably or...