Penske merger
By this time ISC was profitable, but most of their races were still in the South and in mostly rural areas, with many of the country's major cities like Los Angeles, Detroit, Miami and Chicago lacking a nearby track. ISC began looking for ways to change this in the late 1990s. Homestead–Miami Speedway was built in 1995 by Ralph Sanchez and Wayne Huizenga and in 1997 ISC and Penske Motorsports (owned by motorsports magnate Roger Penske) partnered with the track's owners.[7] In 1999, the company continued its push into the country's urban centers when it merged with Penske, who at the time owned four speedways: Nazareth Speedway, North Carolina Speedway in Rockingham, North Carolina, Michigan International Speedway and the newly constructed Auto Club Speedway (which opened as California Speedway). Chairman Bill France Jr. cited the company's "attractive markets" as one of the major reasons for going ahead with the deal.[8] The new company retained the ISC name, with Penske's son Gregory Penske joining the board of directors.[8] Not all of the new tracks from the Penske merger fit into the company's plans however, as Nazareth was soon closed down and Rockingham was sold. The merger also gave ISC a 90% stake in Homestead-Miami Speedway and the company soon bought out the final 10% to acquire complete control over the track.[8]
In the same year, ISC formed the Motorsports Alliance with the owners of the historic Indianapolis Motor Speedway; this company would go after another huge market in Chicago by building the new Chicagoland Speedway in nearby Joliet, Illinois and by buying out the smaller Route 66 Raceway dragstrip.[4] In 2007, ISC bought out its partners in the company to take control of both tracks.[9]
In 2001, ISC would continue its trend towards modern facilities by constructing Kansas Speedway near Kansas City. In 2003, Lesa France Kennedy took over from Jim France the role of president of the company.[6] On June 1, 2009, John R. Saunders took over as President of ISC, becoming the first ISC president without a "France" surname. Saunders held the position of executive vice president of operations prior to becoming president.
On January 28, 2019, it was revealed on ISC's 2018 annual report that a total of 78,000 seats were removed from Chicagoland, Darlington, Kansas, Martinsville, Michigan, Phoenix, and Richmond.[10]