Johnson poised to show critics his racing days are not over

FILE - In this May 5, 2018, file photo, Jimmie Johnson gets ready before practice for the NASCAR Cup series auto race at Dover International Speedway in Dover, Del. Johnson by all measures is one of the politest athletes in sports. But his patience was tested during the worst season of his NASCAR career by criticism sent his way via social media. Unable to always tune it out, the seven-time NASCAR champion clapped back one day with a stern message: "I'm far from done." (AP Photo/Nick Wass, File)

FILE - In this July 28, 2018, file photo, Jimmie Johnson smiles as he answers questions during a media availability for the NASCAR Cup Series auto race in Long Pond, Pa. Johnson by all measures is one of the politest athletes in sports. But his patience was tested during the worst season of his NASCAR career by criticism sent his way via social media. Unable to always tune it out, the seven-time NASCAR champion clapped back one day with a stern message: "I'm far from done." (AP Photo/Derik Hamilton, File)

FILE - In this May 11, 2018, file photo, driver Jimmie Johnson crosses the start-finish line during a practice run for the NASCAR Cup Series auto race at Kansas Speedway in Kansas City, Kan. Johnson by all measures is one of the politest athletes in sports. But his patience was tested during the worst season of his NASCAR career by criticism sent his way via social media. Unable to always tune it out, the seven-time NASCAR champion clapped back one day with a stern message: "I'm far from done." (AP Photo/Colin E. Braley, File)