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More automakers working to turn your smartphone into a shareable digital car key

The smartphone killed the phone book, audio player, the pocket digital camera, handheld GPS devices and voice recorders. Now that addictive, transistor-filled candy bar is coming for your car keys. The Car Connectivity Consortium (CCC) announced that it's unveiled Digital Key Release 1.0 Specification for its member companies, which is the first step in standardizing protocols. As of now, the potential is there for drivers to download a digital key that can lock and unlock the car, start it, and transfer the key to another operator in order to share the car. The CCC's aim is to save development costs, stave off a glut of similar-yet-competing technologies, and create keys that reflect the expanded use cases for cars, i.e., car-sharing services and to-your-car delivery. Next year's Release 2.0 Specification will standardize an authentication protocol between the phone and the vehicle — how a digital key is generated on a secure server and transmitted to the car and the device — and "promise more interoperability between cars and mobile devices." The CCC says that "NFC distance bounding and a direct link to the secure element of the device" will assure security. We take that to mean the phone will need to be in direct contact with the vehicle, at least to open the door. Carmakers and suppliers have been working on digital keys for years now, and the ecosystem for individual owners to open individual cars is growing. Audi showed off its Mobile Key at the 2015 Consumer Electronics Show, and now calls it Audi Connect Key, but we haven't seen much of it in the field. That same year, Volvo said it expected to sell cars with digital keys only by 2017, which clearly didn't happen. Last year, the head of sales at BMW asked, "Honestly, how many people really need [keys]? They never take it out of their pocket, so why do I need to carry it around?" Even though a digital key offers an owner more convenience and long-distance control over their vehicle, car sharing is the target — and that can even include traditional rental cars. In 2013, Continental began testing a digital key in France, aimed at integrating and simplifying the electric-car-sharing business; everything from finding a free vehicle to driving it and charging it could be done on a phone. A key could be programmed with the driver's information, so that any car the driver gets in will be automatically updated with that driver's preferences, say for audio or seating position.

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.

Audi Prologue Avant puts new styling focus on wagons

As much as we loved the Audi Prologue Concept that debuted late last year at the LA Auto Show – and, suffice it to say, we liked the first Prologue a lot – this new Prologue Avant from the German automaker may just rock our socks that much further off our feet. We have very little by way of actual, concrete details on what's under the angular wagon-shaped skin of the Prologue Avant, but we'd be perfectly content if it kept the previous two-door's 4.0-liter twin-turbo V8 in place underhood, augmented as it was when it was again shown at CES last month with a hybrid-assist system that put total system horsepower at 677, along with a meaty 701 pound-feet of torque. With all that power routed to all four wheels through an eight-speed automatic transmission, the 0-60 time of just 3.5 seconds strikes us as plenty quick. The powertrain details hardly seem the point of this new concept from Audi, in any case. Clearly, the big deal is the new bodywork, which builds upon the beautiful foundation of the original Prologue coupe with an elongated wagon shell and three additional doors (two rear doors and a rear hatch). The attractive body sits low to the ground on exaggerated 22-inch wheels, according to Auto Express. We note high-tech lighting elements front and rear and a modified front fascia with a bit more brightwork than the previous version. Assuming there's a bit of future reality baked into the Prologue Avant – which we believe is likely, considering that the coupe we salivated over in LA was said to point the way forward for the brand – it's safe to say we're in eager anticipation of the next several years at Audi. Have a good look at the images that have so far been released, and feel free to let us know what you think. We're sure Audi is interested in hearing your opinions, too. Related Video: News Source: Audi via Auto Express Design/Style Geneva Motor Show Audi Wagon Concept Cars Future Vehicles Hybrid Luxury Performance 2015 Geneva Motor Show