Three dimensional design is the next subject that intrigued me.  There is something the book refers to as "dynamic form" where the structure implies movement.  I think this piece accomplishes that with its curvature, texture, and sleekness. 
When I look at this, I think rippling waves, wrinkling fabric, or something along those lines.  At the same time though, it strangely doesn't look exactly like any of those!  A clever piece, in my opinion.