Gas Price Update

Today's gas price update shows off the lowest price I found. In the previous update I noted that gas prices had risen $0.42 overnight, from $2.57 to 2.99 for a gallon of regular unleaded. Today--just two days later--the lowest price I found was $3.19 and most were charging $3.39. That's a difference of $0.82!

There's still a half-tank of gas in my Explorer, and I keep wondering if I should fill it just to get past the next jump. At $3.39, I'll probably spend about $50 to fill the tank.