I Wonder Why Kyle Busch Is not Driving In The Trucks Tonight?

Tonight, the Camping World NASCAR trucks are racing in Fort Worth, TX tonight and one of the no shows is Kyle Busch.
I wonder why he is not racing? Maybe he is getting tired of getting into fights and not fighting back?
Busch has raced in almost every truck race this season and there is no Nationwide race tomorrow, so there is no real good reason why Busch is not racing.
So, is Kyle getting tired of getting into fights, like at Darkington and last week in the truck series? Or is he taking a vacation?