The Koenigsegg One:1 has been termed a ‘Mega Car’ by company founder Christian von Koenigsegg. The title comes from the car’s power-to-weight ratio of one horsepower per kilogram. You can watch a walk-around tour of the car by Mr von Koenigsegg himself, but in this video he focuses on one of the car’s many technological highlights; the first top-mounted, carbon-fibre wing with active aerodynamics.