What were Dale Earnhardt Sr's interests?

Amongst others:

• Seven Winston Cup Championships (1980, 1986, 1987, 1990, 1991, 1993, 1994)
• 76 Winston Cup Wins
• 22 Winston Cup Poles
• 428 Top Ten Finishes
• 1998 Daytona 500 Champion
• Winston Cup Rookie of the Year (1979)
• Four IROC (International Race of Champions) Championships (1990, 1995, 1999, 2000)
• Named one of "NASCAR's 50 Greatest Drivers" (1998)
• Voted NASCAR Most Popular Driver (2001)
• Motorsports Hall of Fame Inductee (2002)
• International Motorsports Hall of Fame Inductee (2006)
• NASCAR Hall of Fame Inductee (2010)

Despite all his accolades and accomplishments on the track, his greatest accomplishment of all may have come posthumously. Since his untimely death at Daytona in 2001, many safety regulations have been changed to better protect drivers from the basal skull fracture that killed Earnhardt. The HANS Device (a head and neck restraint system) was ordered mandatory, and many tracks on the circuit have implemented "soft wall" (or, Safer Barrier) technology, to shoulder some of the force of a wall collision. Since his untimely death, no driver has died in a racing accident in NASCAR's top three series.