Mercruiser 5.0/5.7 Mpi Intake Manifold on 2040-parts.com

Vehicle emissions are down and fuel economy is up, EPA reports

The Environmental Protection Agency released its emissions and fuel-economy report for 2010. Adjusted emissions are down across the board, at 395 grams of carbon dioxide per mile. That's a record low for the post-1975 database.

Up in smoke: Smokey Yunick's garage burns

Legendary NASCAR mechanic Smokey Yunick closed the "Best Damn Garage In Town" long before he died in 2001. But the main concrete-block, tin-roofed building on Beach Street in Daytona Beach, Fla., remained a stop on the NASCAR history trail for visiting faithful until Monday night, when fire destroyed the building. The building housed Yunick's office and a medium-size garage and more recently served as office space for Carbon Press, the publishing company that Yunick's daughter, Trish, operates and which produces products that include Yunick's salty 1,100-page autobiography and biographies of other racing personalities.

Porsche celebrates 50 years of the 911 at Pebble Beach

Seven generations across 50 years; nobody has ever matched what Porsche has done with the 911. What started out as the Porsche 901 quickly became the 911 – and wouldn’t take long to become a legend. As one of the most accomplished road-going supercars ever created, it's easy to see why the 911 is also a consummate champion in the motorsport arena – and to celebrate that fact, at Pebble Beach 2013 there was a huge array of road and race 911s, courtesy of Porsche itself along with a stack of private owners.Click through the gallery to see our pick of these great cars...