Speaking on Aero-nomics, I've installed aluminum sheet air dams underneath at the rear chassis cross member and attaching onto the rear bumpers lower lip to reflect air trapping at speed under the bumpers shovel like shape in the open air. Painted flat black it can't be seen unless you are looking hard.

ThumperD, You are right, light is might in the short term light to LIGHT, but Aero effectively cuts through the air straight and narrow like a sparrow.