thisistherubberduck

Where the heck do you see trucks averaging 7mpg? Most of the guys I know, and myself included, only get 5.5 - 6.5. Now this might sound close to 7 for the layman, but in the course of year that's a huge difference.

Ignore this next part if you don't really care about trucking.

Say a normal trucker with a good route goes 2500 miles a week. That's 125,000 miles a year. At 7mpg that's 17857.14 gallons at 6.5 that's 19230.77. With diesel around $4 a gallon in the US that's a difference of 5494.52 per a truck.

Where did they haul?

Just that the D.C.corridor is stop and go so I would assume mpg would be lower.

I find that very hard to believe. Especially in the D.C. corridor, but I've only hauled Midwest and there are very few Macks around here.