'A World Without Petrol' Art Exhibition Launches In SydneyGasoline is cheap. So cheap that a gallon of gas costs 89 cents less than a gallon of sparkling water, and more than $1 less than a gallon of Pepsi, according to economist Mark Perry with the American Enterprise Institute. “When gasoline is the cheapest liquid you buy (except maybe for some bottled water),” Perry wrote on his blog. “You know that gasoline is a real bargain at $2, just as it would be at $4!” “It’s something of a miracle and an amazing blessing that gasoline is so cheap, and something we should all stop and appreciate the next time we stop at the pump and fill up our cars with one of the cheapest consumer liquids on the planet, perhaps while drinking some $28 per gallon Red Bull!” Perry added. Gasoline prices have plummeted more than $1 from a year ago, according to AAA Fuel Gauge, from $3.28 to $2.05 on Wednesday. Prices have fallen because of huge decreases in the price of oil, which has fallen from about $100 per barrel this summer to about $48 per barrel in the new year. Energy forecasters say oil prices could average $53 per barrel in 2015. Gas station in more than half of U.S. states now sell gas for less than $2 a gallon, a welcome relief to drivers and a boost to businesses that spend huge amounts on fuel. But consumers be even more thankful as gasoline (even at higher prices) is still cheaper than buying a gallon of sparkling water. Buying a gallon of gas is only a fraction of the price of buying a gallon of vodka or half and half cream. More