Mclaren did an outstanding job with P1. It is the one of the most aerodynamically advanced supercar in the world. The curves of the car and the rear caught my eye. The body of the car has a very smooth flow and every crevice and cavity is there for a reason and contributes to the aerodynamics.
I modeled the car in maya using Nurbs, which was converted into polygons. I used Keyshot for the render.