Michelin Green X Challenge
Over the past weekend, the Muscle Milk Aston Martin captured its fourth consecutive victory in the prototype category in Michelin Green's X Challenge at Mid-Ohio, almost guaranteeing the vehicle's entry in the 2012 24 Hours of Le Mans.
Click above to view the video after the jump
Corvette Racing C6.R gets faster and more efficient – Click above to watch the video after the break
2010 12 Hours of Sebring – Click above for high-res image gallery
Fernandez Acura ARX-01b at Laguna Seca - click above for high-res image gallery