There was one lap to go in the 2001 Daytona 500, NASCAR's most celebrated event. Michael Waltrip and Dale Earnhardt Jr. were running one-two. Junior's legendary dad, the driver race fans called "The Intimidator," was close behind in third, blocking anyone who might try to pass. Waltrip couldn't stop thinking about all the times he'd struggled to stay ahead -- and the 462 NASCAR Cup races he'd lost without a single win. He'd been a race-car driver...