An interesting marketing ploy. Linking the price of beer to the current petrol price.
If gas prices are driving you to drink, here's the place to go: the Handlebar, 2311 W. North (Chicago).
Under its Inverse Petrol-O-Matic Beer Pricing Scheme, beer prices will fall as gas prices rise.
So with gas at $3, a pint of Goose Island 312 ale is also $3. When gas hits $4, the beer's $2. Five-dollar gas gets you beer for a buck and if gas hits $6 the beer's free.