The new Rolls-Royce Dawn is displayed at the 66th International Motor Show (IAA) in Frankfurt am Main on Sept 15, 2015. [Hao Yan / chinadaily.com.cn]

The roof of the Rolls-Royce Dawn delivers the silence of a Wraith when up and operates in almost complete silence in just over 20 seconds at a cruising speed of up to 50kph.

Rolls-Royce Motor Cars' director of design Giles Taylor said, "The idea of creating a car like Dawn that can be used in comfort by only two adults on a day to day basis is anathema. In creating Dawn we have accepted no compromise to the comfort and luxury of four adults who want to travel together in the pinnacle of style."