Yes, Beer Does Give You Gas

CBS4 Denver: A Colorado-based company has been buying left-over Coors beer to create a fuel alternative.

Merrick, based in Aurora, uses the extra beer from Coors to produce ethanol. Ethanol is mixed with gasoline in Colorado during winter months to cut down on pollution.
“There’s a whole bunch of wasted beer that’s being dropped on the floor,” Steve Wagner with Coors Brewing said.
A plant at Coors turns the extra beer into ethanol. Wagner said the company is planning to start running a second plant in two weeks to turn more beer into ethanol.
The second plant will allow Merrick to make up to three-million gallons of ethanol a year.
Diamond Shamrock stores in Colorado are selling the ethanol-from-beer fuel at their pumps now.