Good point, Ianqui.

I've got to know though -- is this closing statement a joke?

(In a selfish aside, I look at this chart and think that hey, jet fuel really doesn't really constitute that much of our total usage, so I don't have to cut out my relatively infrequent plane trips just yet...)

If not a joke, this is a #1 class error in logic. The key question is the amount of fuel consumed and greenhouse gases generated by an action, NOT whether the action is a large percentage of total usage.

For example, Hummers represent a miniscule fraction of total gas usage.  Is that an argument for buying one?

The unwelcome news is that cheap-'n'-easy air travel is one of the first things that will have to go, if we ever start to take peak oil and global warming seriously.

http://energybulletin.net/5822.html
http://energybulletin.net/3661.html

Yeah, don't worry. It was a joke. Still, I've gotta keep my job, and that's going to involve getting on an airplane at least twice a year.