Kyle Busch was visibly exhausted after muscling his trashed car to the end of the race. He had a few brushes with the wall throughout the race and the ventilation inside the car may have been compromised.
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As he got out of the car at the end of the race, he fell to the ground exhausted.
He was attended to by medical officials and given time to cool off and catch his breath. Thankfully, he was later seen walking around and smiling and is just fine.