Nigel
Stroud has gone with a low wing architecture for the LMP02.
All
LMPs built after January 1, 2002, must mount the rear wing directly
to the chassis. In this effort, the Cadillac mounts its wing directly
to a very large rear structure that also doubles as a crash structure. 
The
rear mechanical unit. Note all the quick release hoses. 
The
rear wing's proximity to the diffuser is apparent in this photo.