3 Oct 2014
'U bend' which not only allowed access to the engines starter but also allowed airflow from the upper surface to permeate the diffusers airflow structure. It's a design feature that has since been assimilated by McLaren but now appears to be defunct in the eyes of Mercedes. They have returned to a more conventional boat tail centre section with a hinged flap, allowing access to the starter. Furthermore you'll note the team (like many of the others on the grid) have installed a row of small vortex generators on the transition between the plank and diffuser.