Ferrari is once again showing off its coach-building capabilities with the release of its latest one-off special, the Superamerica 45, which will make its first public outing at this weekend’s Villa d’Este Concours d’Eleganza in Italy. It was built to order for New York billionaire, collector and former owner of the New York Post, Peter Kalikow, to celebrate the 45th anniversary of his Ferrari purchase in 1961.

Even though it was originally believed that the Superamerica would be designed by Pininfarina, the styling is the work of Ferrari Design with the engineering and manufacturing taking place in-house.

The Superamerica 45 is based on the Ferrari 599 and is distinguished by the custom bodywork and a rotating carbon-fiber roof. The latter incorporates a rear screen and works in a similar fashion to the one found in the older 575 Superamerica. Ferrari recently showed a limited edition drop top variant of the 599 called the Aperta, but this model featured a far more simple soft-top cover.

Other custom details include the double air vents on the front wing, a specific chromed front grille and burnished aluminium A-pillars, wing mirrors and door handles. The one-off Italian supercar is finished in an exclusive Blu Antille shade that matches the color of Kalikow’s 1961 Ferrari 400 Superamerica cabriolet nr. 2331SA. The vehicle’s alloy wheels are colored in the same hue while the roof and other carbon-fiber elements such as the front splitter, side skirts and rear diffuser are executed in a darker blue shade.

We don’t have any photos of the interior yet but Ferrari says the blue theme is carried over inside to the dashboard combined with Cuoio leather trim and Blu Scuro carbon fibre details.

The above photo is of the 2009 Ferrari P540 Superfast Aperta

This year’s edition of the Concorso d'Eleganza Villa d'Este motor show in Italy will see Pininfarina lifting the veils off (that is, unless some scoopster beats them to it…) a spanking new coachbuilt Ferrari convertible called the Super America 45. The one-off supercar was commissioned by New York billionaire, real estate tycoon and former owner of the New York Post, Peter Kalikow, who also owns another coachbuilt Ferrari made by Pininfarina, the 612 Kappa.

While the famous Italian designer is keeping the rest of the details under wraps, the one-off supercar is believed to be based either on the 599 GTB Fiorano or the 599 GTO with some claiming it may feature a similar rotating central-piece roof to the 2005 Ferrari 575 Superamerica. The bespoke, open-top supercar will probably be powered by a stock 6.0-liter V12 engine, though it is difficult to say what other elements will be kept untouched, as we're talking about a vehicle built to customer specifications.

Pininfarina’s most recent coachbuilt 599 is the Ferrari P540 Superfast Aperta, made for another American customer, Edward Walson. Also, let's not forget the Ferrari SA Aperta, the convertible version of the 599 GTO. Even though the latter was built in a limited series of 80 units as Ferrari's tribute to Pininfarina, it is the closest thing yet to a unique convertible 599. That is, until the Ferrari Super America 45 makes its debut next month.

Other bespoke models confirmed for the 2011 edition of the Concorso d'Eleganza Villa d'Este, which runs from May 20 to 22, include the Audi Quattro Concept, Mercedes-Benz Concept Shooting Break, Infiniti Etherea Concept, Italdesign Giugiaro Go!, Rinspeed Bamboo, Renault DeZir and the Scuderia Cameron Glickenhaus P4/5 racer.

Until we receive some photos of the new Super America 45, take a look at the Ferrari 575 Super America, SA Aperta and P540 Superfast Aperta in our gallery below.

PHOTO GALLERY