"I wanted the pressure of coming down here and having to win the race to win the championship because that's the type of person I am," he explained. "I want the ball. I want to be on the field on the last play with the ball thrown to me. And that's what that moment is. So I guess that shows you that there's definitely some pressure but I like it. I thrive in it, that's what I want."
As for how he would approach the weekend and the race in particular, Keselowski cycled back round to the lessons he'd learned from Aryton Senna: going out there, playing his game, continuing racing his way.
"I've been going for the championship all my life, and specifically this particular one for the last nine races," he said. "So Homestead pays the same amount of points as Chicago did and the same amount of points that Martinsville did when Jimmie won. It's the same, and there's no reason to change that approach, and that's why I feel that way."
As well as the Cup championship, the 2012 Nationwide and Camping World Truck Series titles will also be decided this weekend at Homestead.
The final race in the 22-race Truck season is held on Friday evening, with five drivers still technically in the running but in reality the championship coming down to whether James Buescher can hold his 11pt lead over Timothy Peters and Ty Dillon.
The Nationwide Series decider is on Saturday afternoon, with reigning champion Ricky Stenhouse Jr. holding the same 20pt lead over Elliott Sadler that Keselowski has over Johnson in the Cup series. Stenhouse could alto theoretically be overhauled by Austin Dillon, Ty's brother and the 2011 Truck series champion in his rookie season in Nationwide.
And then all eyes will be on Homestead for the Cup decided on Sunday afternoon - while at the same time, F1 re-establishes itself in the US over in the west, in a race that could decide the world championship between Sebastian Vettel and Fernando Alonso.
It's certainly going to be a busy weekend for motor sport in America.