Here's a tweet for Brad Keselowski: NASCAR champion. Roger Penske must like the sound of that, too. The kid who stole the show at the season-opening Daytona 500 ended the year under the biggest spotlight of them all Sunday, beating five-time champion Jimmie Johnson to deliver the first Sprint Cup championship to Penske Racing. His first act as champion? Sending a tweet, of course, from inside his car: "We did it!" with a picture of the celebration waiting for him. "Always, throughout my whole life I've been told I'm not big enough, not fast enough, not strong enough and I don't have what it takes," Keselowski said from the championship stage. "I've used that as a chip on my shoulder to carry me through my whole career. It took until this year for me to realize that that was right, man, they were right. "I'm not big enough, fast enough, strong enough. No person is. Only a team can do that." Read more: http://espn.go.com/racing/nascar/cu...eselowski-eases-first-sprint-cup-championship
