I'm not sure. Sorry for the cell phone pics, but you get the idea.
Whats the goal here? Does an open wheel well into a rounded tire edge (as from the factory) have a lower drag, or does this idea, with the sharp edges and somewhat blunt angle? I'm thinking the reasoning is that the spinning tire creates quite a bit of turbulence, and keeping air out of the wheel wells is just generally a good idea. But I have no intuitive feel for whether the blunt angle of the front piece would just wash even more wake out to the sides of the car.
Would be made of abs plastic and bolted to the bumper. I can't imagine any benefit or loss will be especially noticeable in mpg testing.
So what do you guys think? Either give me the motivation to knock em out, or save me hours of wasted time, haha.