Hot-head Stewart punched Busch

Tony Stewart has never been able to control his temper

Tony Stewart hit Kurt Busch with more than his car on Friday night at Daytona International Speedway. The two-time Sprint Cup champion also hit Busch with his fist inside a NASCAR hauler, sources close to the situation confirmed on Saturday.

The second incident occurred while the drivers discussed the first incident with series director John Darby and vice president of competition Robin Pemberton.

Officials from NASCAR, Joe Gibbs Racing and Penske Racing would neither confirm nor deny the punch occurred, saying what happens in the hauler stays in the hauler.

Darby, however, said a Saturday morning meeting, which was called to give all parties time to cool off, was less "hostile."

"Partially, I wanted to make sure that in the heat of everything last night our message was delivered very clearly to both competitors," he said. "So we let them go back to the buses and sleep on it overnight."