The car, which is only made to order, is number 01 - two more will be completely shortly, with an undisclosed price tag.
There are more than 4000 hours of work in each car's creation.
Under its unique body is the 8C Competizione's fiery 4.7 litre V8, making 350kW and 480Nm of torque - enough to throw the Disco to the Kiwi legal limit in 4.8 seconds, and give its monied and motivated Italian owners a 289km/h thrill on the autostrada, conditions and constabulary allowing.
The engine is mid-front mounted, pushing power through a transaxle six-speed gearbox and limited slip diff to the rear wheels, with a 49/51 weight split from front to rear. The double wishbone suspension features forged aluminium uprights and supports.
The concourse honours marked the second year of success for Alfa Romeo, with the prestigious Design Award for Concept Cars & Prototypes bestowed on the Alfa Romeo 4C, the compact supercar bred from the company's learning with both the Alfa Romeo 8C Competizione and the 8C Spider.