This is the new Pagani Huayra, the replacement for the Zonda, which has finally been revealed officially after weeks of teases and leaks.
The big news is that the old Mercedes V12 has gone, to be replaced by, well, a Mercedes V12.
But instead of the 7.0-litre naturally aspirated unit found in the Zonda, there's a 6.0-litre V12 with two turbochargers attached.
These can be had in two trims: 'standard', which offers 700bhp and 664lb ft of torque, or a 'Sport' version, which will furnish the driver with 730bhp and a truly stomach-churning 811lb ft of torque. That's enough for a 0-62mph time of less than 3.5secs, and a top speed of at least 230mph.
The basic block is the same as you'll find in an SL65 AMG Black Series, but various internal bits and bobs have been tweaked (headers, pistons, manifolds, etc) at the behest of Pagani.
Source