RKF Racing announced Thursday it will pay tribute to its former driver, the late Greg Biffle, with throwback paint schemes at Darlington Raceway.

Mark Zuckerberg, the founder and CEO of Facebook, now understands the fascination with NASCAR.Zuckerberg made the comment as he coasted a NASCAR Experience racecar back to pit road at Charlotte Motor Speedway. Charlotte, North Carolina, was Zuckerberg's most recent destination on for his 2017 personal challenge.By the end of this...