My reasoning for this is simple: people in the country have a massive dependence on cars and gasoline. For example, my brother used to live on a ranch in the extreme boondocks of Idaho (the area was only electrified in the 1980s) and he and his wife had to drive about 100 miles to go to the supermarket. That's an extreme case, but the general principle is very true. The country has incredible sprawl, and you have to drive really long distances to take care of your daily business. Urban dwellers like myself, on the other hand, don't have to drive at all. My supermarket is a 3 minute walk from my front door. It seems obvious to me that country people -- at least those who aren't making good money from serious agriculture or some other business -- are the ones who will get it in the neck first from peak oil.
Here's an article from summer 2008 that pretty much says it all:
Rural U.S. Takes Worst Hit as Gas Tops $4 Average
Pops and I had a little exchange on this topic in another thread, but I'd like to go into it a little deeper.
Pops:
We'll further diversifying our meager income by planting some U-Pick berries on a couple acres and going as whole-hog into market gardening as time allows next year, direct selling grass fed beef and eggs and some value added (jams, jellies) and homemade stuff at the farmers markets and roadside.
JD:
Just curious, but how much driving is involved in these businesses? For example, how far would people generally drive for your U-Pick berries? And how far do you and your customers generally drive to a farmers market? Do you keep your beef chilled or frozen? Do you use a generator at the market?
Pops
I talked to neighbors who have blueberries they are about to retire from and they said people mainly come from the small town about 5 miles away but some come 40 miles from Springfield or Joplin. They bring their kids and grandkids and a picnic lunch and have a "Farm Experience". With the farmers market people show up with their straw hats and organic cotton shopping bags to be seen by their Green peers. I could make a little money today at the little market on our square but to do any good we'll need to drive to one of the bigger towns — our roadside stand can only make $50 or $100 a week and that's only a few weeks per year.
This is similar to smallpox girl who talks about driving from Seattle to Olympia (60 miles) for a farmer's market.
But these long drives totally negate the purpose of local food:
We have found that if a customer drives a round trip distance of more than four miles in order to purchase their organic vegetables, their carbon emissions are likely to be greater than the emissions from the system of cold storage, packing, transport to a regional hub and final transport to customer's doorstep used by large-scale vegetable box suppliers.Link
Another study gets the same results:
In the worst scenario, a UK consumer driving six miles to buy Kenyan green beans emits more carbon per bean than flying them from Kenya to the United Kingdom.Link
The same point can be seen another way. Suppose a family buzzes out to Pops' farm and picks 10 pounds of berries. Driving an average US vehicle, they'll burn 4 gallons of gasoline for a round trip of 80 miles. (Incidentally, that gasoline will weigh about 2.5 times more than the berries purchased.) Now, a commercial aircraft gets roughly 70 miles per gallon per passenger, and a passenger would be roughly equivalent to 20 boxes of berries (each containing 10 pounds). So for 4 gallons, you could send a passenger 280 miles, and a passenger is 20 boxes of berries, so you could send a box of berries about 5600 miles by air. In other words, driving 80 miles by car to buy 10 pounds of berries uses the same amount of fuel as shipping them 5600+ miles by air. And it just gets worse the less you buy. With a 5 pound box, you're talking 11,200 miles -- about half the circumference of the earth.