Koenigsegg, the Swedish boutique builder of some of the world's most exhilarating supercars, is preparing to reveal its most intense exercise ever at the upcoming Geneva Auto Show. Seen here in a teaser image, the Koenigsegg Agera One:1 is based on its current range-topping Agera R model. The One:1 designation comes from the fact that its engine will produce one horsepower for each kilogram (2.2 pounds) of vehicle weight -- which is currently being projected at 1,340 kg (2,954 lb).  

Also: More first looks from the 2014 Chicago Auto Show 

Although there's no word yet on what will be motivating the new One:1, it's expected to be a modified version of the Agera R's Koenigsegg-designed 5.0-liter twin-turbo V8 that already produces 1,124 horsepower (SAE) on premium gasoline. Also a carbon fiber-intensive exercise, Koenigsegg promises the One:1 will be both quicker and faster than the Agera R, which can streak 0-62 mph in 2.8 seconds and hit a top speed of 273 mph. More details as they become available.

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