In an intriguing video courtesy of Audi via YouCar, the German automaker is reportedly close to creating fully synthetic automotive fuels that can take the place of conventional gasoline and diesel. In conjunction with Joule, and American company based in Bedford, Massachusettes, the two companies are working on mainstreaming a process that takes waste CO2 and combines it with water, sunlight, and special microorganisms to produce ethanol, diesel, and other useful chemicals.