A number of factors are conspiring to create a situation that recently would have been unthinkable: the United States as a supplier of gasoline to world markets. According to Booz & Company, those factors are the rise of biofuels in the West, the introduction of plug-in electric and other alternative fuel vehicles, and the growth of the really cheap car, like the Tata Nano.

Hydrogen has been touted as a viable fuel source for decades, and seemingly every day, some new or upcoming hydrogen-powered milestone is reached or discussed. However, in nearly every case, hydrogen is being touted as a standalone fuel source. But what about using pure hydrogen mixed with gasoline to increase fuel economy and reduce emissions?

Prince Charles is not new to the environmental debate. His blue, 38-year-old Aston Martin, however, has had nothing to do with being environmentally friendly. Until now. The car, a gift from the Queen on Charles' 21st birthday, has joined the growing fleet of cars that run on bioethanol, having been converted to run on surplus British wine.

The wine comes from an English vineyard in Wiltshire, and the EU limits how much wine a vineyard can produce, so the vineyard sells the overage to Green Fuels, which turns it into biofuels and supplies it to the Palace.