Dayton Daily News, Ohio, Greg Billing column.(Column)

Byline: Greg Billing

June 12--You won't find it on any racing schedule, but it could go down as one of the most watched road course events of the year: The traffic leading into Kentucky Speedway's NASCAR Sprint Cup race.

NASCAR returns June 28-30 -- highlighted by the Sprint Cup's Quaker State 400 on June 30 -- and bad feelings still linger for many fans stuck in traffic that backed up nearly 15 miles, only to be told to turn around and go home once they finally arrived at the track. In an attempt to avoid a repeat of last year, Kentucky Speedway has spent nearly $10 million to add parking for another 20,000 vehicles on 170 acres. The state has spent about $3.7 …