Graham Rahal had the spot possible to watch rival teams Penske Racing and Chip Ganassi Racing in a dramatic duel for victory in the Indianapolis 500.

He only wishes he had the horsepower to make a run at them.

While the two teams powered by Chevrolet kept swapping the lead in the closing laps Sunday, with Juan Pablo Montoya ultimately taking the checkered flag to give owner Roger Penske his 16th victory, Rahal was left to finish as the best of the Honda entries in fifth.

His longtime foil, Marco Andretti, was sixth, the only other Honda in the top 10.

While he fell short of victory, Rahal said he was proud of the performance, especially coming just days after part-owner David Letterman's retirement from late-night television.