Cheap gas kills 14,200 people each year

and makes us obese:

With public transit use nationally at a 50-year high, traffic dropped 2.1% in the first four months of this year across the country. That mileage reduction -- along with people driving smaller cars, and more slowly, to save gas -- could mean that 12,000 fewer people will die in traffic accidents this year, ... Air pollution has been reduced enough, ... to prevent 2,200 respiratory-related deaths over the last year. Less eating out and more walking and biking could mean a 10% reduction in obesity,