Looking back through some of the pics I noticed some of the cars have a black gadget on the A pillar.
Courtney on both sides, Gizz on the driver's side, Lowndes on the passenger side and higher up.
DJR, PCR and the 88 cars didn't run with it.
My first assumption was an airvent, but on the closeup photos, it doesn't seem to be an opening for anything. Second idea is as a data gathering device? If so why does Courtney need two???
see my flickr photo set for examples:
http://www.flickr.com/photos/simonle...7603909127849/