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.
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