Tired of paying through the nose at the gas pump? A company called E-Fuel Corporation is offering a backyard ethanol brewer that can produce up to 35 gallons of ethanol a week that you can pump directly into your car:
To make ethanol in the EFuel100, feedstock (consisting of sugar and yeast) or discarded liquor is loaded into the device's 200-gallon (757-liter) tank. Using the LCD screen located on the front of the device (next to the pump), the operator places the EFuel100 either in ferment (for feedstock) or distillation (for liquor) mode to begin the process. The EFuel100 is hooked up to a water source—much like one's washing machine or dishwasher is—and regulates the amount of water flowing into its tank to begin the ethanol-conversion process.
Once the feedstock is fermented, the device transfers the solution to its distillation system, where it is vaporized in a vertical column tube and sent through a membrane that separates the alcohol from the water. The distilled vapor is then cooled back into liquid form and sent to the 35-gallon storage tank, from which it can be pumped into an automobile using a 50-foot (15-meter) retractable hose. The process of turning sugar into ethanol fuel takes nearly a week (although alcohol distillation can be done in a matter of hours).
The company's goal is to keep the cost of ethanol to be less than $1 per gallon (which may be impossible to do), but first you have to ante up $10K to buy the device: Link