Aston Martin Valkyrie: What goes into a 1000bhp Cosworth engine?

The internal-combustion engine might be entering its third age and getting sized up for a place in Sunshine Acres, but it's not going out with a whimper. Indeed, in the spectacular form of the 6.5-litre V12 set to power the forthcoming Aston Martin Valkyrie we might have the ultimate expression of a road-legal, suck-squeeze-bang-blow powerplant.