[Christ]

The idea appears to essentially have rounded the hard edge at the bottom of the inner fender, which will help keep flow attached and going under the bumper, rather than out the sides. Since the flow haas better attachment, the issue in front of the square edge is lowered, making for what would appear to be thrust. In reality, its just less negative forces, and probably by a negligible amount. Wheel skirts would probably compliment the mod.