While we won't go into all the details of Operation Mincemeat (it really is worth studying, though), an integral aspect required the transport of a dead body from Hackney, London, 400 miles north to Holy Loch, Scotland as quickly as possible. The corpse, which was disguised as a major in the Royal Marines and loaded with faux sensitive documents pointing to a landing in Greece, needed to be appropriately fresh. That's where Aston Martin racing driver turned MI5 operative Jock Horsfall came into play.
The body was loaded into Horsfall's customized 1937 Fordson van, and hustled north. For the rest of the story, you'll need to take a look at Xcar's recapping of Horsfall's fateful journey while at the helm of an Aston Martin Vanquish Volante, the far more civilized successor to the English legend's black 2 Litre Speed.