Filling up the tank just took another bite out of drivers’ wallets this week. The national average for a gallon of regular unleaded jumped 16 cents in just seven days, landing at $4.43. Compared to this time last year, drivers are now shelling out more than a dollar extra every time they pump a ga llon. […] Sticker Shock At The Pump: Gas Prices Spike Again As Oil Hits $100 ...read more read less