It's a generic Can Am type car...unless you have exact dimensions I can model
I wanted a sense of what the air is doing. The front wheels generate a huge nasty wake...I don't think enough air is attached to the sides to make a plan taper effective.
The 5 part body is Jaray's composite body to perfection. air speed is lower over most of the body - higher pressure means less lift. With the under body shape, it's more like one giant wing with four wheels. Racecars derive up to ~70% of their download from aero. It's also easier to streamline wheel arches, rather than an entire body. I'm sure it helps Cd too.
from koenigsegg's site:
Aerodynamics CCX
Cd. 0,32 Frontal area 1.867 m2
Total Downforce at 250 km/h: 100 kg
Flat underside of chassis. Venturi tunnels at rear of chassis/body.
drag index: 6.63 ft² not even a 1990 oldsmobile cutlass supreme...never mind a fish
the CCR (the most aerodynamic) is: Cd. 0.297. Frontal area 1.825 m2 - almost prius worthy