Originally Posted by
Namenda
The aero-ness of the helmet is, sadly, offset by the forehead wrinkles. Shame, really.
Those are boundary layer wrinkles. His tunnel work showed a significant improvement in cDa against the "unconcerned" or "I smell a phart" facials expressions.
I believe his blog post was something to the effect of "to go fast, you must have a facial expression that looks as if the wind is ripping at your bloody mug. Look fast, go fast."