[["Jimmy Johnson started racing motor cycles at the age of four.  His talent was noticed by Hendrick Motorsports driver Jeff Gordon, who convinced owner Rick Hendrick to sign Johnson in the Winston Cup Series full-time for 2002", 34.0], ["Jimmie Johnson started off racing motorcycles, buggies and trucks in 1980. He started racing in the NASCAR Busch Series in 1998, and started his first full NASCAR Winston Cup season in 2002.", 13.0]]
what year did jimmy johnson start racing
sports,nascar