The 2000s: the resurgence in the US

The debut of the SpeedVision television network brought a resurgence of interest in sports car racing in the US, with the network originally showing a large amount of sports car racing and sports car related programming. However, the network was eventually sold to News Corporation, which made it NASCAR-centric, and has since replaced the sports car related programming with either NASCAR programming (in 2009, NASCAR purchased the Grand American Road Racing Association, which is an independent subsidiary) or reality shows. Regardless, Speed continues to air the majority of sports car racing seen on television, with only a handful seen elsewhere, primarily on local stations.

The IMSA GT Series evolved into the American Le Mans Series; the European races eventually became the closely-related Le Mans Series, both of which mix prototypes and GTs; the FIA remains more interested in its own GT and GT3 championships, with the ACO's rules the basis for the LMS and ALMS. The Le Mans Prototype is somewhat reminiscent of the old Can Am prototype.

Further splits in the American scene saw the Grand American Road Racing Association form a separate series, the Rolex Sports Car Series, with its own GT and prototype rules aimed at providing cheaper, lower-cost racing for independent teams. Grand Am's Continental Tire Sports Car Challenge, a support series for the Rolex Series, provides a similar series to the old Trans Am Series, mixing conventional sports cars and touring cars. Due to Grand Am's affiliation with NASCAR, many NASCAR drivers occasionally participate in the Rolex Sports Car Series. Max Papis is a notable example in that he was a road racer prior to his tenure in the Sprint Cup Series. Many of these drivers only participate in the 24 Hours of Daytona.

The Trans Am Series dissolved in 2006. However, the SCCA continues to provide a major support series for the more prestigious series. This series, known as the Speed World Challenge, consists of separate one-hour races for GT cars and touring cars (respectively). The Trans Am series returned in 2009, but has yet to establish a television contract.