Gas prices, thanks to the Global War on Terror and Hurricane Katrina, are now the highest in the nation's history. Gas easily tops $3 per gallon in San Francisco, Boston, Los Angeles, Miami, and other cities across the nation, making driving an expensive way to get around. For reference, gas prices have increased roughly 100% since 9/11.
What's the upside? That ridiculously expensive petroleum is prompting people to drive more slowly on highways, drive less often, buy more fuel-efficient cars, and take mass transit more often. (Mother Jones)