This in Koenigsegg is called KNC, which is an abbreviation of “Koenigsegg Naked Carbon”.
It is completely from carbon-based material, sandblasted, polished, and hand-made! And, the car is lighter for some 20 kilograms. Nothing significant.
But the visual impression is what is more urgently mentioned here.
With sandblasting was removed the final layer of epoxy resin, but the process is so sensitive that one removal can further disturb the structure of the knitting of carbon fibers and everything can be ruined. Visual.