Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

EPA makes it official--greenhouse gases are pollutants

On the eve of an international climate summit, the EPA on Monday formally declared greenhouse gases to be dangerous pollutants, strengthening President Barack Obama's hand and laying the groundwork for a new 35.5 mpg standard for light vehicles. The finding is likely to have a greater impact on electric utilities, oil companies and manufacturers than on the auto industry. The EPA's scientific finding reported that these gases “are the primary driver of climate change,” which can intensify heat waves and increase ozone pollution linked to asthma and other respiratory illnesses.

Upcoming Mercedes-Benz MLC-class spied testing

Just a few weeks after the debut of the Mercedes-Benz MLC in concept form, prototypes have been spotted testing in Colorado earlier this month. The MLC is meant to offer packaging similar to the BMW X6, combining the SUV shape of the ML with a more coupe-like exterior design. The MLC will make its public debut at the Moscow International Motor Show in August of this year, a location that is perhaps indicative of the target audience for this upcoming crossover.

Watch a flying Aventador crash in London traffic

Sometimes you just get lucky. In this case, it's you, the Autoweek reader who's doing the lucky-getting. You see, usually, when some weenie dings his flat-black Aventador, the most you can hope for is a photo or two of the carbon-intensive carnage.