It was ultimately changed to lap 33 when Kevin Harvick 's smoking car brought out the yellow flag .
Due to rain that affected Saturday 's on - track events , NASCAR schedule a competition caution at lap 40 despite an Xfinity race being run late in the morning .
NASCAR was ultimately changed to lap 33 when Kevin Harvick 's smoking car brought out the yellow flag .
Due to rain that affected Saturday 's on - track events , NASCAR schedule a competition caution at lap 40 despite an Xfinity race being run late in the morning .