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MTM Audi RS6 Clubsport might be overkill for grocery shopping

As automotive journalists, we're biologically wired to love station wagons. We really don't have a choice. And while we prefer brown, diesel-powered, manual-transmissioned long-roofs, we suppose a 750-horsepower Audi RS6 Avant would be just dandy. This is the MTM RS6 Clubsport, and as we mentioned, it's very powerful. That's thanks to a modified version of Audi's critically acclaimed 4.0-liter, twin-turbocharged V8. While 750 hp out of just 4.0 liters is impressive, 697 pound-feet of torque is an equally big accomplishment. And if that's not enough, MTM has managed to shave nearly 200 pounds of body fat from the big wagon. Needless to say, it's very, very fast. MTM has displayed a degree of aesthetic restraint, eschewing the gaudy body kit favored by some other tuners and simply opting for a questionable paint job. The 21-inch wheels look good, although with the smattering of rubber around them, we wouldn't bet on a comfortable ride. As for the cabin, well, MTM got a bit out of hand. It's very, very orange. The seats are essentially carbon-fiber shells lined with bits of orange, leather-wrapped padding here and there. Orange, quilted-leather in the door panels, center armrest and on cushions on the side of the center console – a nice touch we wish more automakers would add to their performance cars – contrasts nicely with the black plastics and carbon fiber found on the rest of the dash and center console. That said, we aren't crazy about space for passengers, thanks to the large cage that's there to boost structural stiffness. We have a full gallery of photos of the MTM RS6 Clubsport direct from Geneva. Trust us, you'll want to have a look at this one. Related Video:

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 + Airbnb: What it's like to live in a car commercial

Miles from civilization, in a lonely stretch of Death Valley, lies an unlikely sight: a sleek contemporary home – all glass, concrete, and metal – and a pair of equally modern 2017 Audi R8 V10 Plus coupes. You might have seen the combo in a TV commercial that ran during the Emmys, a spot that had us asking an obvious question: What are these objects doing together, smack in the middle of nowhere? Audi partnered with Airbnb to offer the home and the cars to seven guests. Somehow, we became lucky number eight. The spot, entitled "Desolation," promotes the carmaker's flagship alongside what ended up being an extreme rental property. The idea to build the three-bedroom, 1,200-square-foot house came from Italian writer and author Fabrizio Rondolino, who was long smitten with American desert. The home was built in 2010 using prefabricated construction by San Francisco-based architecture firm nottoscale. It's a spare elevated structure, with floor-to-ceiling windows cinematically framing the sky. To set the four-wheeled mood, images of the R8 sit where family photos would go, and a laser-cut aluminum sign over the entrance announces it as the "Home of the R8." In acknowledgement of the remoteness, a satellite phone sits charged up with clearly printed dialing instructions. An Easter egg from the ad – two jars of Leadfoot Coffee – hides in plain sight on the kitchen counter. You can rent houses like this elsewhere on Airbnb, but here's where gearheads start paying attention: The two Audi supercars counter the architectural tranquility with a combined 1,220 horsepower and an opportunity to rip through the desert at obscene speeds (not to mention several other extras you don't get with a standard vacation rental; more on that later). Seven three-day/two-night stays were offered through an extremely limited Airbnb listing. The buzz surrounding the campaign was so strong that the place booked up in less than six seconds. For what you get, this was a steal. The per-night price of $610 – a reference to the V10's horsepower figure – wouldn't begin to cover the behind-the-scenes logistics needed to coordinate and execute this marketing exercise. I was the sole member of the media invited to experience the Audi Airbnb and got to spend a weekend in this desert playground to see what it was all about. My weekend began when an Audi rep met me and my family at Las Vegas International Airport following a quick flight from Burbank, California.