2000 Audi R8

Images copyright James Davies and Marc Urbano
Text copyright Michael J. Fuller
The R8 has no means of separating the air coming out of the wheel well from that coming from the diffuser section.  Audi adds front end downforce via dive planes.  Here in Sebring trim we can see two per side. 
In this shot we can see the splitter that starts at the beginning of the flat bottom.  From there the air is diverted either side of the tub, merging with the airflow from out of the wheel well. 

ęCopyright 2000, Michael J. Fuller