The LifeLock.com 400 race is a part of the NASCAR Sprint Cup series. It is held annually and is the 18th race for the Sprint Cup series season.http://www.stubhub.com/lifelock-com-400-chicago-tickets/ The race was introduced in 2001 as the Tropicana 400, but was renamed in 2004 due to a change of sponsor.
Background
In 2009 the 267 laps-event was won by the racer Mark Martin, driving for Chevrolet.http://sports.espn.go.com/rpm/raceresults?raceId=200907110038&seriesId=2 The race is easily confused with the LifeLock 400 race held at Michigan International Speedway, due to the similar names.