Koenigsegg’s Agera RS hypercar was the fastest selling model in the Swedish carmaker’s history, and the 2016 Koenigsegg Agera Final model that was displayed at the 2016 Geneva Motor Show earlier this month was proven to be a fitting end to the Agera lineup.

The Koenigsegg “One of 1” is just the first of the limited production run of the Agera Final series, with the owner wanting a car that came as close as possible to a One:1 ratio in terms of power-to-weight.

As portrayed by its name, the “One of 1” is a completely bespoke vehicle with custom upgraded elements like a one-of-a-kind roof-mounted air intake and a 3D-printed twin-exit titanium exhaust outlet, just to mention a few of the one-off parts used on the vehicle.

The “One of 1” features an upgraded twin-turbo V8 engine that produces 1,360 horsepower and just over 1,000 pound-feet of torque.

Agera Final models will be built and delivered toward the end of 2017.