In transportation there's currently no basic alternative to fossil fuels. Yes, you can have compressed natural gas and stuff for limited things like buses or closed-circuit types of things, but there is no substitute for petroleum products at the moment for long-distance transportation.
Again, from long-distance transportation come all these other benefits. You can specialize agricultural production in the best land, and you can produce fertilizer with natural gas. Today we produce something like eight or nine times more corn on the same piece of land than we did a century ago; so of course the more general agricultural—