Dale Earnhardt Jr. and his wife Amy sit down with Marty Smith to describe the physical and mental limitations he experienced last year after suffering a concussion and how he's battled to get back behind the wheel.
Dale Jr. glad to know there's no limit on his career
SC Featured preview: Suárez's improbable journey to NASCAR champion
Dale Jr. concerned about life beyond racing
Carl Edwards retires from NASCAR healthy
Redesigned Camry set for NASCAR Cup Series
Earnhardt Jr. describes emotions on return to track
Earnhardt Jr. feeling good, looking forward to next year
Johnson not bound to chasing numbers
Johnson's execution makes history with seventh title
Marty Smith gets a bird's-eye view of Homestead Miami Speedway
Stewart confirms Homestead will be his final race
Johnson embraces chase of Petty and Earnhardt
Johnson describes the significance of the number seven
All coming together for Martin Truex Jr.
'The King' gives Lee Corso his very own Richard Petty hat
Earnhardt Jr. puts health over desire to drive
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