drafting

Some of these things have been discussed here; this is a nice overall look at the pros & cons. :) Squeezing gas for the very last mile - Oil & energy - MSNBC.com

I have the Scangauge hooked up and up to now (through 2000 miles), the best I got was 47.5mpg driving mostly flat highway around 60-65mph. Typically, it has registered between 37-40mpg average based on everyday driving. Tonight I had to take a 40 miles hike across town. I was on the highway and...