Darlington has come and gone meaning we are halfway through the season. How did it affect the NASCAR Power Rankings? We’re going over the weekend’s results and ranking the ten fastest drivers in the Cup Series right now. Drivers have come and gone in the NASCAR Power Rankings, but a few have been there all season long. There wasn’t a lot of action in the top of the rankings but we do have one new name and a few drivers who have struggled recently. A few drivers have been getting the benefit of the doubt, well that’s starting to run out. In these rankings speed on a weekly basis matters. A coup…