"We were just trying to make something out of nothing."
Harvick, meanwhile, picked up his fourth win of the season when Edwards ran out of gas headed to the white flag. Harvick sailed by right before the last lap to grab another memorable moment in a career with Richard Childress Racing that will end next week after 13 seasons.
The victory also put Harvick in the title race - albeit as a long shot, 34 points behind Johnson.
"We're talking about locking him in the port-a-potty, so that should sum it up," Harvick joked. "Those guys are good at what they do and they're good at every track."