I was really excited today to see if I could beat my previous best trip of 42 mpg, instead I got 38.2.
Moderate rain, defroster use, and increased traffic kept me from 40+. Also, I found out that my radiator 'duct' didn't hold up in the water and high speeds. Oh well, I'll just have to make one out of coroplast. Some taped up gaps to keep air from going above the belly pan failed as well. At least my diffuser is holding up.