I am curious as to why Denny Hamlin was allowed to finish the race? Doesn't the minimum speed rule come into play? Or do they have to throw the black flag on the car? He failed to meet the minimum speed after going to the pits the first time and they always harp about how you have one chance to get to the minimum speed. Can someone help me understand? Or do I have to find a NASCAR rule book which is more vague and secretive than Area 51?