The national average for a gallon of regular unleaded gasoline eclipsed the $5 mark earlier this year, according to AAA. It has recently fallen below $4, however -- a small respite in a sea of ...

The national average for a gallon of regular unleaded gasoline eclipsed the $5 mark earlier this year, according to AAA. It has recently fallen quite a bit, however -- a small respite in a sea of ...