Kurt Busch says that the shortage of competitive seats is the biggest obstacle standing between himself and a place on the grid for this year's 100th running of the Indianapolis 500. The 2004 Cup champion finished sixth with Andretti Autosport at Indy in 2014, and reiterated his interest in returning for this year's race. But while he is confident that he could pull together the backing necessary to get a deal over the line, he admits that he's less optimistic about finding a car that will allow him to run at the front. "It [the Indy 500] is on the backburner," Busch told Autoweek. "That's especially true since it's the 100th running. There's a lot of sponsorship...
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