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As corporate fleets across the globe have slowly transformed into a paradise for green cars, finding a company that hasn't revamped at least a portion of its vehicles over to greener technology is becoming harder and harder. Though AT&T would not be considered pioneers in the drive towards greener fleets, the company's recent commitment to cleaner vehicles shows that it's dedicated to cleaning up its act fast.

2009 24 Hours of LeMans Start – Click above for high-res image gallery

This is what we mean when we say that the future of alternative fuels isn't anywhere close to being decided. A team from the BBC program Bang Goes the Theory has rigged an older Volkswagen Scirocco to run on coffee pellets. It's a bit complex, with the coffee grounds needing to be heated to 1,292 degrees Fahrenheit, and the resulting concoction cooled, separated and filtered before it's run to the engine. Because coffee contains carbon, however, it works.

It may sound a bit like something from a Dr. Seuss book, but it seems "green gasoline" is indeed on its way to a pump near you. Terrabon, a Texas-based company specializing in biofuels, reports its alternative fuel is completely compatible with gasoline and can be produced using nearly any kind of organic material, including sewer sludge.

These days, its not much easier to run a racing series than it is to run a car company. However, if there is any series boss who could be said to be in an "enviable" situation, it is Scott Atherton, CEO of the American Le Mans Series. Coming off its tenth anniversary in 2008, the series had its most successful season yet. However, the loss of Audi and Porsche as full time competitors certainly stings, although not to the same degree that Formula One is feeling right now. Even with manufacturers

Undeterred by the fact that ethanol is the worst type or alternative energy, the federal government is in love with corn ethanol, perhaps a bit too much. Over the years, the American farm lobby has worked and worked to get subsidies for corn growers and, more recently, ethanol producers. The result, as calculated the Environmental Working Group in a new report, is that ethanol (including made-from-corn biofuel) now receives more than three times as many federal dollars ($3 billion in 2007) than

This isn't the first time we've heard that Toyota might spin off the Prius as a separate brand much like Scion. But we now have the most concrete news about the automaker's plans we've seen yet.

A number of factors are conspiring to create a situation that recently would have been unthinkable: the United States as a supplier of gasoline to world markets. According to Booz & Company, those factors are the rise of biofuels in the West, the introduction of plug-in electric and other alternative fuel vehicles, and the growth of the really cheap car, like the Tata Nano.

Hydrogen has been touted as a viable fuel source for decades, and seemingly every day, some new or upcoming hydrogen-powered milestone is reached or discussed. However, in nearly every case, hydrogen is being touted as a standalone fuel source. But what about using pure hydrogen mixed with gasoline to increase fuel economy and reduce emissions?

Part of the problem is speculation: individual and institutional investors betting on higher future oil prices. Another big factor is the very weak U.S. dollar. But the bulk of the reason oil and gas prices have climbed so high is that age-old Economics 101 supply/demand equation. Global demand, especially by developing countries, continues to grow, while supply does not.

digg_url = 'http://digg.com/environment/VIDEO_Top_Gear_looks_at_alternative_fuels_in_1990'; As difficult as it may be to believe, interest in alternative fuel vehicles actually pre-dates the launch of AutoblogGreen a little more than two years ago. Another fact that may be tough to swallow is that the BBC's Top Gear was not always the hour of silliness we see today with Clarkson, Hammond and May. In fact Top Gear's current format only began in 2002. Going back in time it had a more staid maga

The mostly reconstituted AT&T operates a huge fleet of vehicles nationwide in order to keep its communications infrastructure in working order. As such, it has a very strong financial incentive to cut petroleum use as fuel prices keep rising. To help address that, starting in June, Ma Bell add 105 alternative fuel vehicles to its fleets in thirty cities nationwide. The new additions will consist of 25 vans fueled by compressed natural gas, 65 Ford Escape and Toyota Prius hybrids and 15 work

We're in Detroit now, but Sebastian and Sam took some time to chat about a few things before leaving for the show. Rick Wagoner's CES keynote was historic, as was the appearance of the Cadillac Provoq at that show. Coming up at Detroit we'll bring you details on all of the alternative and fuel-efficient vehicles like the Hummer HX that signals a wholesale move to E85 capability and the first ever unibody Ford Explorer. Sebastian brings us an interview with Bill Roe of Coskata Energy about their

As yet another country clamoring for the lofty goal of being the alternative/renewable fuel leader, India is making some advances. And the goal seems achievable: one million plus hydrogen-powered vehicles on their roads in the next thirteen years. The hardest part is obviously getting a hydrogen infrastructure in place, but the difficulty of the task doesn't seem to faze them.

A reader of the site, Keith, let us know about this 1992 Corvette which had it's 300 horsepower LT1 smallblock V8 yanked out and replaced with a 350 horsepower 4 cylinder engine. I don't have any good details on the engine currently sitting under the Vette's hood, other than the facts stated in the headling, namely it being a 4 cylinder engine making 350 horses on E85.

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