Sweden’s iconic (and only) supercar brand is shipping its latest offering across Europe for a public date (and debut) at the 2011 Geneva auto show.Chistian von Koenigsegg’s Agera R is the latest of a line outlandish supercars from the man who made his fortune running a family export business supplying the burgeoning Baltic state economies during the period of Soviet deregulation in the early 1990s. Although the first R-tuned Agera was delivered to the Omani royal mamily a few weeks ago, the Geneva show will be the first time Koenigsegg's most powerful ever production car has been shown to the world motoring media and public.TURBOS, NO BLOWERSHow has the Agera R evolved from its Koenigsegg siblings? Well, the styling may not differ that radically (bar for a few added louvres), but the drivetrain has a larger capacity engine and an additional gear ratio.Powering the Agrera R is a five-litre twin-turbo V8 producing a rather ridiculous peak power figure of 820kW when run on E85 bio ethanol. Output drops to "mere"’ 700kW when fuelled by regular 95 octane unleaded. Koenigsegg fans will notice that this V8 s a larger capacity unit (by 200cc) than the engine found in the company’s CCXR limited edition cars and that it has exhaust gas-driven forced induction instead of crankshaft-powered supercharging. Beyond the larger engine, the Agera R also gains an extra gear. Its seven-speed dual-clutch transmission should ensure performance capable of embarrassingly shadowing a Bugatti Veyron – especially due to the Swedish supercar’s low mass of only 1330kg, nearly 500kg less than the VW Group's storming supercar. True to its billing as one of the world’s greatest supercars, the Agera R’s chassis is a carbon-fibre monocoque of such rigidity that it features a removable targa roof panel. Other interesting styling details include the ornate louvres positioned over the each wheel arch and an authentically Swedish option you are very unlikely to see on any other supercar - a roof-box.NOT INSIDE, ON TOP...Renowned Swedish ski and bicycle transport solution provider Thule fashioned a custom composite roof-box to fit on the Agera R’s removable targa panel. Perfect for when you need to rush out to Builders' Warehouse for some fittings and there's a one day special offer, in another country…Besides the Thule ski box, Agera R’s true pièce de résistance are its wheels. Koenigsegg calls them vortex generation rims (VGR) and beyond the jargon these wheels have spokes fashioned at a specific angle of attack to help increase down force.Michelin tyres specifically moulded for the Agera’s 420km/h theoretically geared top speed, the R180 000 roof-box option (and bio-ethanol dual fuelling capability) make this latest Koenigsegg supercar one of the world's most sensible. If you can call an R11.3-million supercar sensible… More 2011 Geneva auto show reports.