[MetroMPG]

I put on a full width belly pan that extends from the middle of the car to the tail that covers most of the worst items under the car (gas tank, rear axle, most of the exhaust/muffler etc). It should help the tail perform better. I'll post pics this weekend.

It's pretty easy to add one to the Prius - there area many existing plastic panels & deflectors underneath to use as mounting points. I didn't have to drill a thing -- just used self tapping screws into plastic.

Sunday looks promising for testing weather again. Higher speed this time.