3 ms·

I believe the jet fuel usage industry (airlines).

• bee_rider 4y ago
  Could be. What has tripped me up is that we don't usually call it the "airline system." I think it is just a little typo but it is funny how ambiguous the result is. Airlines -- makes sense because we're talking about jet fuel, but "system" isn't usually used in the context of planes I don't think. Rail -- sort of makes sense because "railroad system" is at least a somewhat familiar expression. Maybe they are just using the size of the project as a point of comparison. Highway System -- similar to the previous, this makes most sense if it is just a comparison WRT the magnitude of the project. Highway system is of course a very common expression. Anyway this shouldn't be taken as needling at the original post or anything, it is just a little typo. The point is clearly that it is a very big project, and we have other worthy project of a similar magnitude and impact that we're not engaging in.