I see it too...good eye. And, ^love your username...funny!
Not sure if these are the same pix as the others but w/ PS'd backgrounds...prolly different. But, yes...you can see the mohawk in the last pic. On top of that, you can also see the laptop mounted in the center console (like police cars have) for all their preproduction Camaro testing data....kinda neat.
Also, they might be testing the usefullness of slotted rear rotors vs regular rotors to help them determine which to use.