September 14 2013 Chicagoland Geico 400 Practice #2 Speeds and 10 Lap Averages Ryan Rantz NASCAR News, Practice Speeds Average Speeds, Chicago Practice #2 Speeds, Chicagoland, Chicagoland 10 Lap Averages, Chicagoland Average Speeds, Chicagoland Geico 400, Chicagoland Practice #2 Speeds, Chicagoland Practice Speeds, NASCAR, NASCAR Average Speeds Chicagoland Geico 400 Practice #2 Speeds and 10 Lap Averages (PDF) Missed More