Edwards' motor fails with two laps to go while he was running fourth.
Busch lives up to pre-race announcement and said victory is "bigger than winning the Daytona 500."
The County Board of Supervisors is expected to declare the first week in March No Cussing Week.
Business owners and residents in the Ozarks are worried about water levels one year after significant flooding. Corps officials do not want to lower water levels for fear of lack of spring rains.