Shelby Cobra raced by three F1 drivers heads to auction

American Shelby has built numerous versions of the Cobra sports car over the years, though among the most desirable—and collectible—are the 427 S/C and Competition cars. One of those cars, a 1965 Shelby 427 Competition Cobra, is now headed to auction and is likely to fetch millions. The car, which bears chassis number CSX3006 and…