Koenigsegg has followed its announcement that it's coming to Geneva, by serving up this delicious teaser image of the rear end of the One:1. Just six units of the Agera-based hypercar will be made, all of which have already found buyers. The huge rear wing we can see in the image is supported by two roof-mounted fins. With a theoretical top speed of 280 mph, the One:1 – named after the fact it will have one hp per kg – will need plenty of downforce to keep it grounded.

Koenigsegg expects the 1,400-hp One:1 to be the quickest car in the world and has its sights on surpassing the 268 mph top speed set by the Bugatti Veyron Super Sport WRE. Look forward to more information and live pics of the limited edition supercar after its unveiling at the Geneva Motor Show next month.