General Motors unveiled the much-anticipated production version of the Chevrolet Volt on its 100th anniversary celebration, a report said.

The Chevrolet Volt delivers up to 64 kilometres of gasoline- and emissions-free electric driving, with the extended-range capability of hundreds of additional kilometres.

'Revealing the production version of the Chevrolet Volt is a great way to open our second century,' said Rick Wagoner, GM Chairman and CEO.

'The Volt is symbolic of GM's strong commitment to the future… just the kind of technology innovation that our industry needs to respond to today's and tomorrow's energy and environmental challenges.'

The design of the Chevrolet Volt production car has evolved from the original concept that was unveiled at the 2007 North American International Auto Show in Detroit.

Because aerodynamics plays a key role in maximising driving range, GM designers created an aerodynamically efficient design for the production vehicle. Many of the design cues from the concept vehicle endure in the production Volt, including the closed front grille, athletic stance, rear design graphics, outside rearview mirrors and more.

The Volt's rounded and flush front fascia, tapered corners and grille are functional, enabling air to move easily around the car.

In the rear, sharp edges and a carefully designed spoiler allow the air to flow off and away quickly. An aggressive rake on the windshield and back glass help reduce turbulence and drag.

Working closely with GM aerodynamicists to shape the Volt, design and engineering teams developed one of the most aerodynamic vehicles in GM's history.

They spent hundreds of hours with the Volt in GM's wind tunnel, testing and re-testing parts such as the front and rear quarter panels, rear spoiler, rockers and side mirrors.

Aerodynamic improvements enabled GM to reach the Volt's target of driving up to 40 miles (based on EPA city and highway cycle) without using gasoline or producing emissions.

Inside, the Volt offers the space, comfort, convenience and safety features that customers expect in a four-passenger sedan, and it delivers them in a variety of interior color, lighting and trim options unlike any offered before on a Chevrolet sedan.

Modern controls and attractive materials, two informational displays, and a touch-sensitive infotainment center with integrated shifter distinguish the Volt’s interior from other vehicles in the market.

Some of Volt's interior technological features include: driver-configurable, liquid crystal instrument display; Standard seven-inch touch screen vehicle information display; touch screen-style climate and infotainment controls; optional navigation system with onboard hard drive for maps and music storage; Standard Bluetooth for cellular phone and USB/Bluetooth for music streaming.

The Chevrolet Volt is leading a new era of electrification of the automobile by creating a new class of vehicle known as the Extended-Range Electric Vehicle, or E-REV.

The Volt uses electricity to move the wheels at all times and speeds. For trips up to 64 kilometres, the Volt is powered only by electricity stored in its 16-kWh, lithium-ion battery.

When the battery's energy is depleted, a gasoline/E85-powered engine generator seamlessly provides electricity to power the Volt's electric drive unit while simultaneously sustaining the charge of the battery.

This mode of operation extends the range of the Volt for several hundred additional kilometres, until the vehicle's battery can be charged. Unlike a conventional battery-electric vehicle, the Volt eliminates 'range anxiety,' giving the confidence and peace of mind that the driver will not be stranded by a depleted battery.

The Chevrolet Volt can be plugged either into a standard household 120v outlet o