Complex sentence: The DC100 is an off-road concept vehicle from Land Rover intended to demonstrate what vehicle will replace the long-running Defender in 2015; first unveiled to the public in September 2011 at the Frankfurt Motor Show.
Split into simpler sentences: The DC100 is an off-road concept vehicle from Land Rover intended to demonstrate what kind of car could replace the long-running Defender in 2015. It was unveiled to the public in September 2011 at the Frankfurt Motor Show.