Koenigsegg is celebrating 15 years of manufacturing exclusive speeders with the unveiling of the new Agera supercar, which is destined to make its world debut next week at the 2010 Geneva Motor Show.

The new model is based on the regular CC but infused with new design elements and an uprated powertrain. Its name, Agera, in Swedish translates to the verb "to act" and was picked because it symbolizes the Koenigsegg philosophy--that is, always improving its cars and pushing its designs to the limits.

Taking the basic Agera body, Koenigsegg’s designers have made the front of the car as wide as the rear to improve balance and minimize body roll during cornering. The car has also been fitted with new ventilated and cross-drilled ceramic brakes and a special traction control system with an auto adapt functionality for different road conditions and driving styles.

The big question remains: how much power is lurking under the Agera’s carbon-fiber hood? Thanks to optimized breathing and more boost pressure from the engine’s forced induction system, power is now rated at 910 horsepower and 811 pound-feet of torque. Best of all, there's more than 737 pound-feet of torque from as low as 2,680 rpm and this is sustained all the way up to 6,100 rpm.

The interior of the CC has also been completely redesigned for application in the Agera. One of the highlights is a new type of ambient lighting called “Ghost Lights” where illumination shines through the car’s billet aluminum buttons and surfaces by way of invisible nanotubes. There’s also a new carbon-fiber center console with a multi-info cluster and single dial controller for everything from basic functionality, a G force meter, power meters, navigation, music, lap-timer or compasses.

The Agera on show in Geneva next week will be a pre-production model. Development and testing will continue for a further six months and will include the efforts of tire manufacturer Michelin, which is working on a specific tire design for the car.