I'd be afraid to do it unless I could adequately hedge on fuel prices. Getting yourself locked into a long-term contract at specified rates is a quick ticket to the poorhouse if you don't have a hedge on gas prices in a rising price environment.
"Hey, for every ten dollars, that's another hour that I have to be in the work place. That's an hour of my life. And my life is a very finite thing. I have only 'x' number of hours left before I'm dead. So how do I want to use these hours of my life? Do I want to use them just spending it on more crap and more stuff, or do I want to start getting a handle on it and using my life more intelligently?" -- Joe Dominguez (1938 - 1997)