If you’re a carbon fiber enthusiast, the Koenigsegg Agera R is a car that is your dream list.  There is so much carbon fiber on the car that even the wheels are made of the material using a technology Koenigsegg developed called Aircore.  The technology allows the spokes and the center part of the wheel to be completely hollow, cutting out on weight as much as possible.  The one-piece wheel has no metal aside from the center cap and the tire valve stems.

All this carbon fiber allows the wheel to be an impressive 40% lighter than a forged aluminum wheel, but still much stronger.  Just to prove how light they are, check out the below video where one owner literally throws the wheels around:

[Source: Jalopnik]