2015 Ferrari FXX-K

Powerful rear design featuring prominent aerodynamic wing, diffuser, and racing Pirelli tires on a sleek high-performance track vehicle.

Rear view of a high-performance racing car with aerodynamic rear wing and diffuseremperornie [CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons