taxes on softdrinks... what next?

today, i went to the supermarket to buy some stuff, and i picked up a 12 pack of pepsi on the way out. when i looked at my receipt, i noticed that there was an additional tax of $0.48 for the pepsi, separate from the overall tax at the bottom (not sure if it is included in the overall x% tax that you pay at the end or not, but regardless, it is more).

oddly enough, i could buy 1.92 cans of pepsi for the amount of the tax. actually, for the total of $3.98, i could have bought 15.92 cans from the vending machine at work… (although ideally, i should stop drinking pepsi altogether).