FOR MORE CAR VIDEOS & REVIEWS CHECK OUT http://www.kbb.com/kbb/NewsAndReviews/VideoLibrary.aspx BMW Concept Car. BMW has a habit of turning its concept cars into production realities, which means the stunning four-door, four-seat CS Grand Touring Sedan may already be creating sleepless nights for the competition. Although its exterior clearly exaggerates BMW's traditional styling language (oversized twin-kidney grille, 21-inch wheels, huge lower air intakes), the interior eschews what BMW calls "unnecessary opulence" in favor of highly focused luxury. That means leather and wood mixed with forward-looking features like iDrive, ceramic knobs and ambient lighting. Kelley Blue Book's Jack R. Nerad discusses the concept with BMW's Karim Habib at the 2008 New York Auto Show. For more new car reviews, interviews and automotive news visit http://www.kbb.com today.