Real Alternatives to Fossil Fuels?

Is this a real alternative (click here or on the image to find out more)?

Sustainable Power Corp. "takes such agricultural refuse as cracked soy beans, rice and cotton seed hulls, grain sorghum, milo and jatropha and turns them into bio-crude oil." They claim, that "just one bushel (60 pounds) of organic waste can yield about six gallons of bio-crude" using this process, which they call the "Rivera Method". This translates into replacing "every gallon of gasoline, diesel and jet fuel in the United States using just 12 percent of the waste byproducts in the country." They also claim that this fuel can be even further refined for applications such as petrochemicals applications.

What I'm struggling with is the sheer audaciousness of the claims. I've never heard of biofuel nearly this efficient. And this company isn't alone in making such grand proclaimations of their new green-tech, and hence, confusing the hell out of me - a layman with this subject. Genepax, a Japanese company, has manufactored a prototype car that they state "has an energy generator that extracts hydrogen from water that
is poured into the car's tank. The generator then releases electrons
that produce electric power to run the car." The video (click here) at Reuters shows a company rep claiming that 'the car will run as long as you have a bottle of water to refill thetank from time to time.' Reuters has posted another video (click here) of a professor aruging, skeptically, that there would have to be some external source of power to split the hydrogen from water. I myself, am totally skeptical.

But I put these two examples out there to the LC's wiser environmental researchers: are these hoaxes? Do you know of other interesting hoaxes or new (genuine) fabulous alternative fuel projects?