Complex sentence: On May 29, he became the first driver in history to race in both the Indianapolis 500 and the Coca-Cola 600 on the same day, finishing tenth at Indy and thirty-sixth in the Coca-Cola 600 after suffering mechanical failures.
Split into simpler sentences: On May 29, he became the first driver in history to race in both the Indianapolis 500 and the Coca-Cola 600 on the same day. He finished tenth at Indy and thirty-sixth in the Coca-Cola 600 after suffering mechanical failures.