This Modified is powered by alcohol, specifically ethanol, which in and of itself isn’t that unique. What is unique is that the ethanol was manufactured from whey, the remaining waste product from the production of dairy products, specifically cheese. Generally, whey is considered a waste product and is disposed of, typically by pouring it on fields. But, the manufacture of ethanol gives the whey a new more valuable position, and after the alcohol is made the remaining solids are used for animal feeds as they are high in protein, and the remaining pure water is reintroduced to the ecosystem. It’s this type of activity that makes much more sense than growing a food crop to manufacture fuel.