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Audi creates new diesel fuel from carbon dioxide and water

What if you could power cars of the future with pollution created by the cars of the past? That's what German automaker Audi is hoping to achieve by creating a new synthetic fuel using renewable energy to turn water and carbon dioxide gas into a new kind of fuel they call "e-diesel." The new diesel is being produced at Audi's pilot plant Sunfire in Dresden, Germany. Only a few gallons were created, which the German Federal Minister of Education and Research Johanna Wanka put into her Audi A8 to prove the fuel's bonafides. The base fuel is known as "blue crude" and begins from a green source. Audi uses electricity from wind, water or solar power sources to separate hydrogen from oxygen in water. The hydrogen is then mixed with carbon dioxide which has been converted in carbon oxide. The blue crude is then further refined to create the e-diesel. The carbon dioxide is currently supplied by a biogas facilities, but some of that CO2 was captured from the air. "The engine runs quieter and fewer pollutants are being created," says Sunfire CTO Christian von Olshausen. The fuel can be combined with conventional diesel fuel, as biodiesel fuels already and would be competitively priced against regular diesel, according to Gizmag. Sunfire can produce about 42 gallons of e-diesel a day. That seems like barely a drop in the bucket in terms of Europe's energy use, but Audi is ready to commercialize the technology with plans to expand production with a bigger facility in the future.

2015 Audi A3 Cabriolet

When my 758-mile journey on the A3 TDI Challenge came to an end in Boulevard, CA, Audi had a very nice consolation prize waiting for me: the 2015 A3 Cabriolet you see here. And with miles left to drive before reaching my hotel in Coronado (just outside of San Diego), what better way to celebrate my personal victory of achieving nearly 60 miles per gallon in the TDI than to run the rest of the route in couple of turbocharged A3 droptops? After all, the efficiency part of my drive was done, so it was time to have some fun. The A3 Cabriolet comes to market just as the sun sets on another four-seat convertible from the Volkswagen Group stable: the Eos. That car, often criticized as being too expensive, is technically replaced by the Beetle Convertible as far as VW-badged products go. But for those who still prefer something a bit more upmarket, the A3 Cabriolet will fill the void nicely, and with more style and grace than the Eos ever had. Driving Notes The A3 Cabriolet arrives with a choice of engines. On the base end lives a 1.8-liter turbo-four with 170 horsepower, 200 pound-feet of torque and front-wheel drive, or you can pony up for the 2.0T with 220 hp, 258 lb-ft and standard Quattro all-wheel drive. Regardless of engine, the only transmission available in the A3 Cab is Audi's six-speed S-tronic dual-clutch unit. This is a fine cog-swapper, with quick shifts regardless of chosen powertrain, and steering wheel-mounted paddles that offer plenty of fun from behind the wheel. That said, I found it best to just leave the transmission alone, no matter the engine. The paddles are entertaining, sure, but slick the gear selector into Sport and the A3 will instinctively hold gears through turns and always have you right in the heart of the powerband. The 1.8T's 170 hp and 200 lb-ft are more than adequate for duty in the 3,373-pound A3 Cabriolet. I was never bothered by a lack of power, especially with the engine on boil with the transmission in its sport setting. Hitting 60 miles per hour takes 7.4 seconds, en route to an electronically limited top end of 130 miles per hour. If speed is your thing, though, the 2.0T certainly delivers quite a punch. That same 0-60 sprint takes just 5.9 seconds with the more potent powerplant, and you can really feel the stronger rush of power right off the line, even with the quicker A3's 210-pound weight penalty.

166 MPGe diesel-electric Audi Q7 E-Tron Quattro gets real in Geneva

Despite some warnings that plug-in vehicles would not make a big impression in Geneva this year, the first big reveals from the Peace Capital are indeed PHEVs. For example, the diesel-electric Audi Q7 E-Tron Quattro, which right out of the gate comes at us with some impressive numbers: an all-electric range of 34 miles and the "potential" to hit 166 miles per gallon equivalent. Whatever scale Audi is rating the new Q7 PHEV on, 166 MPGe is a resounding success. As we might guess from the prototypes we've seen and hints we've had, the Q7 E-Tron Quattro is not some auto salon fantasy. The vehicle will go on sale at the end of this year, in the UK, at least. Availability in the rest of Europe and here in the US is likely but unspecified in the press materials we've seen so far. The real-world reality of the Q7 E-Tron Quattro means that specs like a 0-100 kilometers an hour (62 miles per hour) time of six seconds and a top speed of 225 kmh (139.8 mph), CO2 emissions of under 50 grams per kilometer and a total system torque output of 516.3 pound-feet should be ours to test in the not-too-distant future. This whole E-Tron program is turning out to be quite something. Who else is ready? Related Video: AUDI Q7 ENTERS THE VOLT AGE IN GENEVA WITH NEW SUB 50 G/KM Q7 E-TRON QUATTRO 02/03/15 Commanding new Q7 incorporates hybrid drive for a combined 876-mile range and 166mpg potential First diesel plug-in hybrid with quattro drive in its segment First ever plug-in hybrid TDI from Audi Six-cylinder TDI engine develops 373 PS Electric-only range of up to 34 miles, increasing to 876 miles combined Fully charged in two and half hours Maximum efficiency with hybrid management UK ordering expected to open at the end of 2015 Ingolstadt/Geneva, March 2, 2015 - Audi has combined its world renowned diesel engine expertise with its equally widely acclaimed flair for technological innovation to create its first TDI plug-in hybrid with quattro all-wheel drive. Making its world public debut at the Geneva Motor Show, the new Q7 e-tron quattro combines a frugal TDI engine with lithium-ion battery technology for a potential range of up to 876 miles and the ability to travel emission-free for over 34 miles on electric power alone, contributing to an official CO2 figure of less than 50 grams per kilometre. The Q7 e-tron quattro is the second Audi model with a powerful plug-in hybrid drive system.