When water is more expensive than gas

January 20th, 2010: Went to the store to purchase some water for solely the plastic bottle. Costing about $2.00 USD for a liter, I had to think. Seeing a man fill up his gas tank a few days back for about $0.50 USD for 24 liters (6 gallons of gas) I wonder if my water purifier could clean the impurities out of the gas so I could just drink gasoline instead of water? I will have to see if there is a test subject out there for my experiment...maybe a dog or cat will have to try it first, then...a backpacker.