This is what drives me nuts about gas prices. Last week it was around $1.85 then it goes to $2.08 on Thursday. Tuesday night it went down to $1.97 this morning it went to $2.13. The price changing just doesn't make sense.
Another take though on the price of gas is to consider what it takes to make a gallon of gas including prospecting, drilling, collecting, refining, shipping, etc. before it gets too your tank. Add on approximately 50 cents a gallon in taxes depending on where you live and then think about the price. Consider the following as well:
O.J. - $4.00 a gallon
Water - over $1.00 a liter
Milk - $2.86 a gallon
Pepto Bismo would cost close to $40 a gallon