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These "aeroedges" appear to be mostly bandaids to compensate for aerodynamic inefficiencies downstream from them. For example, the aeroedge that deflects the air flow on the side of the car outwards to reduce turbulence around the front wheel housing. This increases the effective frontal area, but reduces the turbulence created by the front wheel opening. A lower drag solution would be a a rounded front combined with a front wheel skirt, but the aeroedge allows them to style a "normal" looking car with slightly less drag than the normal looking car would have had. In this application, the aeroedge is acting as an airdam for the side of the car. It diverts the airflow away from an aerodynamically dirty portion of the car, but at the expense of adding additional drag. But if the drag reduction from the area that it is protecting is greater than the drag increase from the aeroedge, then it is a net reduction in drag. But still not as low drag as having a properly designed clean (wheel well skirted) curve running down the side of the car. The edges at the rear of the car are there to clean up the airflow as it leaves the back of the car to reduce the size of the recirculation eddy. But they are still much higher drag than a boattail with practically no recirculation eddy. So these are just bandaids to allow them to build slightly lower drag versions of "normal" looking cars. However these tricks won't get them anywhere near a Cd in the 0.1's.
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