Italdesign Quaranta
The "Quaranta" project is a concept car designed to celebrate Italdesign Giugiaro's forty years of business in styling and technological research at the service of the automotive sector. The Quaranta, world-premiered at the 2008 Geneva International Motor Show, is a synthesis of Italdesign Giugiaro's unmatched experience of automotive design: from city cars to super sports-cars, from MPVs to medium-engined saloons up to and including luxury flagships and environment-friendly SUV, not to mention light/heavy duty commercial vehicles, in complete cooperation with leading manufacturers all over the world.
The Quaranta is an "extreme" product, an environment-friendly, 4WD super sports-car which incorporates a series of innovative aspects: its styling, but also its drive technology, which combines a hybrid engine with solar energy, and its internal layout which, despite its mid-mounted rear engine, can accommodate three adults and a child, also providing a generous luggage compartment.
The idea which inspired the Quaranta project is that of the first single-volume concept car with central engine and drive. The original reference is to the 1968 Bizzarrini Manta which, at that time, represented a major breakthrough in styling, now adapted to state-of-the-art technology and enriched with Italdesign Giugiaro's forty years experience of research.
Despite its flat, highly compact shape, the Quaranta features a single-volume shape characterized by a continuous body line stretching from its clipped nose to the tail that exploits the almost horizontal rake of the windscreen. Access to the cabin is "step-in" via an upper door incorporating the side ones. At the touch of an electric
on/off button, the door opens upward in a downwind direction, regulated by proximity sensors. The door is hinged to the hood pillar and is aligned with a second upper rear door, for access to the engine compartment and boot.
The roof houses the array of solar panels, necessary to power the electric battery, in the space between the two doors. Along with the other solar panels positioned on the front end, these create a central opaque strip, a distinctive signature of the model, thanks to the interplay of light with the bright paint of the bodywork. The solar panels can generate a power of up to 250 W, sufficient for the functioning of the cockpit conditioning system and for recharging the electric battery.
The styling of the Quaranta prototype is further enhanced by the attention dedicated to surface aerodynamics, designed to ensure maximum possible efficiency and penetration, also by using sharp edges on the rear. This can also be noted in the front end of the vehicle where the radiator grille has been eliminated and replaced by two side air inlets, positioned above the lighting clusters, which perform the delicate function of front stabilizers. The rear of the vehicle has also been conceived to improve overall aerodynamic performance: an attentively-molded spoiler, with a perfectly square-edged cut and a very technical design, has the scope of supporting the lower wing, modeled according to latest generation F1 styling, that makes up for the absence of the traditional upper stabilizer.
The chassis, bodywork and layout of the Quaranta prototype have been designed by the Engineering Division of Italdesign Giugiaro, while the mechanicals and electronics have been developed in cooperation with Toyota. The vehicle was entirely built at the Moncalieri facilities.
Source:-carslegend.blogspot.com
The first concept is a tall and narrow five-door hatchback model with seating for four passengers, while the second model appears to be a sportier looking three-door variant with a lower roofline and more aggressive lines, in the likes of the Scirocco. We can't tell for sure, but it is possible that these two cars are roughly the same size as the Polo. 
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