Possible Clues:

• Active time for a racetrack crew
• Interruption of race as result of miners' strike?
• Slangy restroom visit
• Brief interval for re-fuelling
• Bed's best as place for drivers to rest
• Indy happening
• It keeps you from going around in circles
• Break on the road
• Place where cars halt during race for service like wheel-change
• Car race service break