Well, not only, main concern for actual F1 is to get understanding from the flow all around the car as every single element is affecting his direction.
For exemple, flow coming off the top of the sidepods or engine cover has been highly investigated this year, and is permanently under high development.
Through CFD, you can understand flow direction created by the rest of the car and you can attach element to rearrange that flow.
This is obviously leading to customized rear wing with the purpose to cut down the vortex and reducing drag, through all kind of solution to play with pressure differentials : endplate attached to to the top rear flap, louvers ... |