So next month, GM will shut down for a week the factory in Bowling Green, Kentucky, where the sports car is made.

NPR: Economy Forces GM To Slow Corvette Production

It's a mix of prosperous green suburbs, wooded rural areas, and old-line factory towns trying to adapt to the service economy.

NPR: Philadelphia House Race Turns on Money Issues

Their vision: architect- designed, factory-built, single-family dwellings with green accents (including energy-efficient appliances and airtight construction) that appeal to higher- income, eco-conscious buyers.

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