April 18 2015 Bristol Food City 500 NASCAR Happy Hour Practice Speeds and 10 Lap Averages Ryan Rantz Fantasy Nascar, Practice Speeds 10 Lap Averages, 2015 Bristol Spring Race, Average Speeds, Bristol 20 Lap Averages, Bristol Practice Speeds, Fastest In practice, Happy Hour, NASCAR Bristol Food City 500 NASCAR Happy Hour Practice Speeds and 10 Lap More