Construction of the track, on the site of the former Kaiser Steel Mill, began in 1995 and was completed in late 1996, The speedway has a capacity of 68,000 and 28 skyboxes and a total of 28,000, In 2006, a fan zone was added behind the main grandstand, Lights were added to the speedway in 2004 with the addition of a second annual NASCAR race weekend. Since 2011, Auto Club Speedway has hosted only one NASCAR race weekend.