My wonderful wife found my lost ecomodder.com window cling decals this morning, and I installed them right away. I wasn't getting a whole lot of contrast between the white letters and the gray interior, so I painted the paper backing from the decals black and taped it on as a background. I put one in the passenger rear window and one on the drivers side of the hatch glass.
Lifetime Fuel Economy: 39.49 mpg
View my fuel log here: http://ecomodder.com/forum/em-fuel-log.php?vehicleid=717