The "exburbs" and the rural poor will feel it first and hardest. Exburbians moved to the farthest reaches of suburbia for cheap real estate, willing to drive at least an hour each way to work. Many live marginally now. What happens when their commute becomes prohibitively expensive, just as interest rates and inflation rise, while their property values plummet? Urban real estate will go up, so they won't be able to live near their jobs – and there's nowhere else to go. In addition, thanks to Congress' recent shameless activity, bankruptcy is no longer an option for many. What happens to these people? Exburb refugees. A modern Dust Bowl.

For the rural poor it's even worse. They are the poorest among us, with no assets and few skills; they earn the lowest nonimmigrant wages in America, and they must drive. When gas hits $4, their already below-the-margin life will be unsustainable. They'll have no choice but to be refugees and join in the modern Dust Bowl migration. So, too, will people who live where people were never intended to live in such numbers – places like Phoenix and Vegas, unlivable without air conditioning and water transport (energy prices will rise across the board, regular brownouts, blackouts, and faucet-drips will be "the new normal" everywhere). In the desert cities, real estate will plunge, thousands will be ruined, most will leave – while all over the country folks will have to get used to "hot" and "cold" again.