Could H20 and CO2 be the formula for a carbon-neutral fuel? Audi thinks so.
The automaker in collaboration with Sunfire, a clean technology company, is producing a synthetic fuel from just two raw materials: water and carbon dioxide. The e-Diesel can be refined into diesel or gasoline, is carbon-neutral and results in quieter automotive performance. The viability of e-Diesel in the U.S. is somewhat questionable, however, as diesel prices are low and scalability of the fuel is as-yet uncertain.
Learn more about blue crude in this National Geographic article.