In 2011, tandem drafting was a notable phenomenon in NASCAR Cup Series races at superspeedways.
Jimmie Johnson, aided by Dale Earnhardt Jr., won a race by .002 seconds, tied for the closest finish in NASCAR history.
The couple that tandems together, signs together.
With 319 victories, checkered flags are common, but this signed flag is unique.
Author's summary: Jimmie Johnson's autograph giveaway.