According to UK enthusiast website ATFULLCHAT Noble Automotive have not ignored the possibility of building an M600 roadster. On 21 June 2012 the website published a rendering of an M600 drophead that was commissioned internally by Noble Automotive, although company MD Peter Boutwood is quoted as stating there are no plans at present to produce such a machine. However, in 2016 Matt Prior of Autocar tested the cabriolet version now called the M600 Speedster. Giving it 4 stars even though it was still in the development stages. Evo also reviewed the Speedster claiming “Whereas the Lamborghini Huracán and Aventador feels compromised by having its roof sliced away, the Speedster is close to undamaged.”