e-diesel
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Audi makes eco-friendly diesel from carbon dioxide and water
In an ideal, pollution-free world, everyone would be driving electric and hydrogen fuel cell cars. Audi knows society isn't quite there yet, however, so it has a stopgap if you still get around using conventional vehicles. The automaker recently produced its first batch of "e-diesel," a synthetic diesel based solely on carbon dioxide and water -- readily available chemicals that are far nicer than sulfur and other typical diesel elements. It's even relatively eco-friendly to make, as you use electrolysis to break down the water and merge it with the CO2 in a high-efficiency synthesis process.
