(AP Photo/Jeff Roberson)

MADISON, Ill. (AP) Twelve years to the day that Richard Childress and Kyle Busch came to blows in one of the parking lots of Kansas Speedway, the two were celebrating a NASCAR Cup Series victory at a track straight down Interstate 70 near St. Louis.

It was proof of many things: That a team that once dominated NASCAR's top series with Dale Earnhardt behind the wheel of the famed No. 3 could still contend for championships, that Busch could be every bit as successful after moving on from powerhouse Joe Gibbs Racing, and perhaps most importantly, that a couple of boys can grow up.

“Yeah, I mean, people change,” Busch said after holding off Denny Hamlin on Sunday night to win at World Wide Technology Raceway.

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