March 21 2015 Auto Club 400 NASCAR Practice #2 Speeds and 10 Lap Averages Ryan Rantz NASCAR News, Practice Speeds Auto Club 400, Auto Club 400 NASCAR Practice #2 Speeds, Average Speeds, NASCAR 10 Lap Averages, NASCAR Average Speeds, NASCAR Practice #2 Speeds, NASCAR Ten Lap Averages Auto Club 400 NASCAR Practice #2 Speeds and 10 Lap Averages (PDF) More