Heh. I doubt it. They’re probably sweating so much liquid out that they’re dehydrated at the end of the race.
BTW...winners at the Nashville track get a Martin guitar....at least the Nationwide Series winners do.
http://www.sportsmansdaily.com/nascardepend.html
But apparently for the most part, you’re right...it’s too dehydrating to mean they gotta worry about it.
But...um...it’s not a subject I would have thunk up.