Audi R10 TDI using biofuel for the first time

In the world of alternative power, not all fuels are created equal. This fact is true with ethanol, where the alcohol can be made using fairly inefficient processes, some of which involve corn, or using more advanced cellulosic methods which do not use a foodstock. Diesel too can come from either petroleum or from non-dino sources. You're probably aware that Audi has been assaulting various race tracks using its advanced diesel powered race cars, specifically its two-time Le Mans-winning R10 TDI, which has so far been running on what is known as gas-to-liquid (GTL) diesel fuel. With the 24 Hours of Le Mans just around the corner, Audi and Shell, the fuel provider for Audi's race team, have announced that the team will be blending a small amount of biomass-to-liquid (BTL) fuel into its secret mixture. Shell's BTL fuel is made from materials such as wood chips and will make its on-track debut on Sunday, June 1, as Audi's R10 TDI begins its official Le Mans testing.