JOLIET, Ill. -- Kyle Busch said it was over.

Even he amazed himself.

Busch rallied after he was passed for the lead late by Jimmie Johnson and even declared on the radio "race over."

The final caution turned the race into a two-lap shootout. Busch needed only one lap to score his season-high seventh NASCAR Sprint Cup win of the year and 14th overall throughout NASCAR's top three divisions.

"We do not quit," crew chief Steve Addington yelled on the radio in excitement to Busch after the LifeLock.com 400.

"I don't believe that," Busch said in an exhausted, unemotional voice.

Johnson finished second with Kevin Harvick, Greg Biffle and Tony Stewart completing the top five. Brian Vickers was sixth with Matt Kenseth, David Ragan, Martin Truex Jr. and Ryan Newman placing sixth through 10th.

Johnson seemed headed for his second Cup win of the season when he got by Busch 17 laps from the finish.

"Race over," Busch radioed his crew after being passed.

"Keep digging bud," Addington radioed.

A few laps later, Busch's disappointment remained.

"He's getting smaller," Busch radioed his crew, referring to Johnson pulling away.

Addington tried to convince his driver that something could happen to Johnson in the final laps.

"Anybody ever see Jimmie Johnson give them up?" Busch radioed his crew. "No. Anybody ever see Kyle give them up? Plenty."

While Johnson is among the best in the sport at taking the lead in the final 10 laps, Busch showed what kind of talent he is even if he had doubts.

"I gave up on myself," Busch said in Victory Lane. "I just didn't think I could do that. I don't know how I did that.

"This is a dream season. Can you believe this?"

Others did not have as good a race.

Edwards gave up the lead on lap 212 for what he thought was a flat left front tire. After he pitted, his crew informed him the tire was not flat. Yet, Edwards, who lost a lap and fell back to 31st, said his left front continued to vibrate as sparks could be seen. His splitter broke and dragged the ground, altering the aerodynamics on his car and making it handle worse.

Told by crew chief Bob Osborne that he could drive with the damage, Edwards radioed back: "I'm going to drive my heart out and see what happens."

A couple of laps later, Edwards radioed: "If you see any big pieces fly out, let me know and give me a warning."

He finished 32nd, but it was not the result his car was capable of having.

Dale Earnhardt Jr., who entered the night second in points, wasn't a factor. He fell from second to fifth by the time of the competition caution on lap 37. Later, he fell back to 29th after pitting on lap 50. Most of the leaders changed only two tires, while Earnhardt's crew made major adjustments, which took more time and dropped him back. He spent the rest of the race trying to climb his way back toward the front with minimal success. He finished 16th.

Jeff Burton, who started third, lost 14 spots in the first 35 laps. Even the competition caution wasn't helpful to Burton. He missed his pit stall and was hit by Jamie McMurray, who was turning into his stall. Burton pitted the next lap to repair the right front fender.

He later tapped Michael Waltrip, who slowed for a car in front, and sent Waltrip spinning to create a caution on lap 113.

Martin Truex Jr.'s luck continued to sour. He was penalized 150 points by NASCAR this week for a violation -- although that penalty hasn't been factored in as the team is appealing the penalty. Truex bounced off the wall early in the race and during a caution was caught for speeding while exiting pit road.

"I'm an idiot," Truex radioed his. "I'll have to make it up."

Matt Kenseth saw his hopes to win hurt when he had to pit for a flat right rear tire on lap 124 and fell to 37th place.