No photo of real car. It's a legend !
The car would have been won at poker by Paddy Mayne or one of his friends and used in SAS vehicle. But no historical information was found on it. The vehicle was already made 1/35 by a talented maker and another version was made in 28mm. Otherwise, there is also this BD that could be at the origin of this legend :
Other information also speaks of another historical figure that could have used this Bentley: Vladimir Peniakoff in his Private Army on LRDG Troop.
Read the beginning of my project on my blog http://scale72world.blogspot.fr/2017/06/butcher-bolt-legend-part-1.html