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Evidence: . President Obama's ambitious goals to curb the United States greenhouse gas emissions is to shift in American behavior. Research studies suggest that Americans are buying fewer cars, driving less and getting fewer licenses as each year goes by. The United States has long been one of the world's prime car cultures. The number of miles driven in the United States peaked in 2005. "What most intrigues me is that rates of car ownership per household and per person started to come down two to three years before the downturn," says Michael Sivak, a research professor at the University of Michigan's Transportation

Research Institute. The internet makes telecommuting possible and allows people to feel more connected without driving to meet friends. With all these changes, people who stopped car commuting as a result of the recession may find less reason to resume the habit.

Score: 1