Product name: E-Fuel 100 MicroFueler
The claim: Make your own ethanol for less than $1 a gallon.
How it supposedly works: The MicroFueler is a portable ethanol micro-refinery. Add yeast, water and sugar to the 250-gallon tank of this at-home pump. After a fermentation and distillation process... voila, you've got ethanol. MicroFueler claims to produce up to 35 gallons of ethanol per week.
Retail cost: $9,995
Proven to work: