Dale Jr. Download: Mark Martin "Had I Not Failed"

NASCAR legend Mark Martin talks to Dale Jr. about his biggest influences in the short track days and the time that a lack of a right rear spring sprung him to the top of the speed charts. Mark reflects on his relationship with fellow competitors and why he was comfortable sharing his setups with anyone that asked. The veteran opens up about his journey to NASCAR, then losing everything, and how that failure made him who he is today.