Jimmie Johnson thought little of the broken slab of concrete he saw on the Dover track during driver introductions. The pesky chip that Johnson ignored spawned into chunks of track spewed toward cars, a bridge, and caused a red flag for 22 minutes Sunday in the NASCAR Sprint Cup race. The race was stopped 160 laps into the race after Ryan Newman's car knocked up hunks of concrete from the track that kicked back and damaged Jamie McMurray's car. Some of the concrete flew up and cracked a window on the pedestrian crossover bridge. More...