A series of overnight cautions broke up the rhythm of the 63rd Rolex 24 at Daytona International Speedway. But Porsche Penske Motorsport was unaffected, and the team continued to hold down the top two overall positions as the classic endurance race reached the three-quarter mark.

As he always does, the billionaire who turns 88 next month stayed awake and sat with the team on the timing stand for the entire 24 hours.