September 28 2013 Dover AAA 400 Happy Hour Practice Speeds and 10 Lap Averages Ryan Rantz NASCAR News, Practice Speeds Dover, Dover AAA 400, Dover AAA 400 Happy Hour Practice Speeds, Dover Practice Speeds, Dover Ten Lap Averages, Monster Mile, NASCAR Average Speeds, NASCAR Practice Speeds Dover AAA 400 Happy Hour Practice Speeds and Ten Lap Averages (PDF) More