INDIANAPOLIS — IndyCar executive Brian Barnhart wonders every day whether there was something, anything he could have done to prevent the crash that killed Dan Wheldon.

Results from the two-month investigation into the fatal accident, released Thursday, absolved Barnhart of any blame. But that hasn't made it any easier.

Pausing to collect his thoughts, Barnhart says the death was "devastating" and that getting through the emotions of the past two months has been "extremely difficult and challenging."

In his first substantial comments to reporters since the crash, Barnhart talked about his emotions after the race, the new focus on testing and his new job. Two weeks ago, he was removed as head of race control after a controversial season in which drivers publicly questioned his decisions.