Complex sentence: Bentley's new flagship model which brings back the Mulsanne name last used in 1992, and will replace the Arnage, was unveiled at the 2009 Pebble Beach Concours d'Elegance, on 16 August 2009.
Split into simpler sentences: Bentley's new flagship model brings back the Mulsanne nameplate last used in 1992, and replaces the Bentley Arnage. The Mulsanne was unveiled at the 2009 Pebble Beach Concours d'Elegance, on 16 August 2009.