Hey, has anybody ever seen one of these before?
Highway Glider - Home Page
It's an aerodynamic cover to go over your license plate.
I don't know how big of a difference they make or not, but at least they make people think about aerodynamics.
They are pretty cheap, and you can get custom messages put on them. (Ecomodder.com, anyone?)
I got one of these given to me by the Milwaukee Hybrid group. I did notice that it doesn't fit on the back of the Metro or Sunfire, because of how the plate is recessed on the bumper. Maybe I will put it on the front of Kristin's Sunfire.
My first impression is that it would make a MINIMAL difference. Might look pretty cool on a Prius though.
Anyways, I will play with it when I get a chance and report back here.