September 19 2015 Chicagoland NASCAR Practice #2 Speeds and 10 Lap Averages Ryan Rantz NASCAR News, Practice Speeds 10 Lap Averages, Chicagoland Average Speeds, Chicagoland NASCAR Practice #2 Speeds and 10 Lap Averages, Chicagoland Practice Speeds, NASCAR, NASCAR Practice Speeds, ten-lap averages Chicagoland NASCAR Practice #2 Speeds and 10 Lap Averages (PDF) Missed practice More