Methanol and Ethanol fuel cells are around and are actually quite simple. Most as based on a alkalizing process. Catalysts can be rare and non rare earth based. The membrane is also different as it uses a different ion transport method which is alkali not acid based. Power output is usually lower than a hydrogen cell but with a good setup (catalysts and proper operating temps) the cell can get very close to the hydrogen output. Whats interesting about these cells is that the cost can be drastically lower than a hydrogen cell when using the non-noble catalysts. As an example we were coming up with a cost of about $175 or so to make a 1kw fuel cell.. Almost all of that cost was the membrane instead of being the catalysts. A non noble catalysts cost can be as low as a few hundred dollars a pound compared to about $25K or more for platinum based ones. We've been running a old Sebring Citi car around using a ethanol fuel cell and ultracaps for about 3 years now. We use a water ethanol mix and outside air. We've also run it on rubbing alcohol and vodka. We did entertain talking to one of the bigger vodka makers for a sponsorship. Would have to have been 'fair'. Something like one for the car, one foe me ;-] IF you read this (answer waaaay after the original post) look for information on DMFC or DEMFC or DEFC which is nothing more than Direct Ethanol Fuel Cell.