I had a conversation with a fellow undergraduate who is working at the sustainability institute regarding this topic, and the whole buy locally thing.
So what we were taking about was essentially that more and more people will begin producing things (coffee, corn, bread, beer, anything really) in their local areas, and the local areas will purchase that product over the same product produced somewhere else, through a combination of nationalism, statism, and cost effectiveness. This would also be a good thing due to the decreased use of fossil fuels and in general overall efficiency. If you're a company and you sell products nationally that you grow nationally, if fuel continues to rise in cost, than it would eventually become more efficient and cheaper to move your facilities closer to your consumers.
For example: many people on the forum are a huge fan of microbrews, in particular they tout their state as "producing awesome beers" etc... (Oregon, Colorado). There is a certain bit of pride involved, and desire to be associated with something produced locally. It's communal and hippy.
But also as a matter of national security. Having California produce 80% of fresh fruit or something just isn't very safe.
Idk, kinda rambling.
Thoughts?