When hearing complaints about high gas prices (the cheapest place in my city is now charging $3.40 a gallon), folks like Rush Limbaugh point out that chic bottled water still costs a lot more. That may be true. But you don’t drink 15 or 20 gallons of water at a time, and you don’t need it to get to work. Bottled water is a luxury. Gasoline is a necessity.