Three races down during Speedweeks and nobody has any idea what they'll see in the Daytona 500. Kurt Busch felt certain he cemented himself the favorite after winning Thursday's first 150-mile qualifying race, backing up last weekend's victory in the exhibition Budweiser Shootout. Jeff Burton, the winner of the second qualifying race, respectfully disagreed. The lack of a clear front-runner was the least of NASCAR's problems, though. Drivers have locked in on a new style of tandem racing that has just about everyone unsure how Sunday's season-opener will unfold. All three races so far have been dominated by two-car packs, as drivers figured out the fastest way around the new asphalt at Daytona International Speedway. It's vastly different from the wild pack racing fans adore at Daytona, and NASCAR has already made a series of rules changes this week in an attempt to separate the cars. Read more: http://sports.espn.go.com/rpm/nascar/cup/news/story?id=6132693
