INDIANAPOLIS -- NASCAR fans are some of the most loyal in all of sports.
And Jeff Gordon supporters are no different.
That was proven once again last night on FOX's "Knock Knock Live," when Gordon showed up in his No. 24 Axalta Chevrolet SS to surprise one of his biggest fans.
Gordon knocked on the fan's hotel room door, and after the initial shock of meeting his idol, the fan quickly asked for an autograph -- for a very particular reason.
Check out the video below to watch Gordon's segment.