My friend bought an Aveo in attempts to drive his Van less after seeing the results of
my aero mods.
Here it is, all stock. It's a 5speed.

Here is the wheel well I had to work with - the aft part (the rear bumper) of the well dips inwards under the plane of the tire. this made things a little complicated, but nothing worthy of an additional picture.

In progress...

Finished skirt

Finished grille blocks

Full finished view
While I was driving it to get some of the hardware I needed for the installation, I got some nice flat stretches of highway where I got an idea of a baseline MPG - about 36-37. When I was finished I went to that same stretch and saw numbers like 42-43. (All at 55mph, very little wind) Hopefully I will be able to convince him to join the forum to give us accounts of his increased FE first-hand, but I will give an update once he does a couple more tanks to see if he sees any significant difference.
I was thinking about doing some science stuff with the AABBABlah...yeah I didn't do it. The means by which I attached the grill blocks weren't as easily removable as the ones on my car, so I trashed that idea. I know these mods made a diff. on my car, so I do expect a sizable increase in FE for this car.