If not for a fuel pickup problem in the final four overtime laps of Friday's trucks race, he could have left The Monster Mile with the first three-series sweep in NASCAR history.
Busch led 172 of 204 laps on Friday, but his truck developed a problem while leading with four laps to go in the Camping World Trucks race. A day later he led 191 of 205 laps for a dominating Nationwide Series win.
On Sunday he beat Jimmie Johnson in a drag race off pit road with 37 laps remaining in the main event and wound up winning by a quarter-mile when Johnson was penalized for speeding while trying to beat Busch back on the track.
Two of three was nice, but three of three would have been better.
"This weekend, if only we could have Friday back, man," Busch said. "That certainly would have set it home a little better. I'll go home tonight and put my head down on the pillow and sleep pretty good anyway."
Busch has won two races in the same weekend several times, especially since he competes in all three national touring classes. But he still hasn't made history by winning all three divisions in the same weekend. The trip to Dover came close.
If not for a green-white-checkered finish Busch would have won the trucks race. Instead, it took two other wins to finally calm him down.
"Of course after Friday I wasn't too pleasurable to be around," he said. "When you lead that many laps and have it stolen away from you at the end of the race, you're always going to be upset about it. I take losing very hard, and that's why I hate to lose as much as I do."
By staying in contention on Sunday, Busch was in position to take advantage of Johnson's mistake.
Eight races ago, some were weary about Johnson's ability to win races, whether it be with a dominating performance or being in the right place at the right time.
Now it's Joe Gibbs Racing's turn to be in the spotlight. Counting Denny Hamlin's three wins, Gibbs' cars have won five of the past seven races -- all since NASCAR replaced the rear wing with the traditional spoiler.
"It's always fun when it is your way instead of the other way around," Busch said. "It kind of turned our way today."
Johnson had the fastest car for most of the race. He led eight times for a race-best 225 laps. More important, he didn't have any problems getting to the front, and staying there, once the traffic thinned out after a restart.
He was the leader when he pitted under green with 37 laps remaining, but Busch's team finished its work on pit road quicker.
As Busch passed him, Johnson hit the gas. He slowed down once Busch had the lead since passing isn't allowed on pit road.
By then, however, it was too late.