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.