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Mercedes -- like a lot of other folks -- believes oil is going to run out eventually. But instead of waiting until the "Low on Oil" light comes on, the brand behind the three-pointed-star has set a goal to convert its entire fleet to run on alternative fuels by 2015. That's seven years to get off the drink we've all been addicted to for well over a century.

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By the middle of the next decade Mercedes-Benz wants its entire lineup to be able to operate entirely free of petroleum. The German giant is working on a variety of technologies that will help provide crude oil free transport such as battery electrics, fuel cells and highly efficient internal combustion engines that can operate on biofuels. Mercedes has recently been letting European journalists sample some of these new powertrains at a test facility in Spain.

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Mercedes-Benz has laid out a long Road to the Future, detailing its efforts to create "fuel-efficient and environmentally-sustainable premium automobiles without the need to forgo the characteristic brand features." That's fancy talk for having your German chocolate cake and eating it, too.

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Does diesel have a future? Autoexpress editor Dan Strong believes the answer is a clear no. He doesn't mince words in his new column: "Thanks to high fuel costs, tough-to-meet emissions targets and growing competition for scarce fossil fuel resources, the engine once championed for its efficiency and cost-effectiveness is finished." While the UK is getting closer to its European neighbors in the number of diesel sales, Strong believes this is not going to last.

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Click on the image to view high-res shots of the Mercedes F700 concept

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Click on the image to view high-res shots of the Mercedes F700 concept

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Mercedes-Benz CEO Dieter Zetsche told Motor Trend this week that increased cost was not going to be an issue for his company to meet new fuel economy standards. Obviously getting improved efficiency out of powertrains would make them more expensive as they have to meet U.S. CAFE and European CO2 emissions limits. However, while U.S. executives like Bob Lutz are talking about adding $5,000 or more to the price to meet 35mpg standards, Zetsche looks at it differently. The use of clean diesels, HCC

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At their annual award ceremony, British magazine AutoCar singled out the Mercedes-Benz DiesOtto engine concept for recognition. The DiesOtto is a turbocharged homogeneous charge compression ignition (HCCI) engine. It first appeared in the F700 concept at the Frankfurt Motor Show in September. HCCI runs essentially as a diesel engine under certain operating conditions but runs on gasoline and produces far fewer emissions than a diesel without expensive after-treatment systems. The 1.8L engine pro

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Better late than never, right? It's totally my fault that AutoblogGreen Podcast #12 is so late in coming, but here it is! Episode 12 is a Frankfurt recap show, and John Neff from Autoblog.com joins Sebastian and Sam to talk about some of the highlights of the dual-personality (green and not so green) Frankfurt Motor Show. There's lots of discussion about the coming E-Flex versus Hybrid Synergy Drive smackdown, the 17 new models coming from Mercedes by 2010, many of them diesels, the Volvo C30 Ef

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