Indy NXT, previously Indy Lights, is an American developmental automobile racing series sanctioned by IndyCar, currently known as INDY NXT by Firestone for sponsorship reasons. Indy NXT is the highest step on the Road to Indy, a program of racing series leading up to the IndyCar Series.
A similar series named Indy Lights filled the developmental role for the CART series, and ran from 1986 to 1993 as the American Racing Series and Dayton Indy Lights from 1991 to 2001. The current IndyCar sanctioned series was founded in 2002 as the Infiniti Pro Series as a way to introduce new talent to IndyCar, with the moniker Indy Lights returning in 2008 when CART and IndyCar unified. The Indy Lights champion was awarded a $1M scholarship toward the IndyCar Series, and guaranteed three races including the Indianapolis 500 during this time. For 2023, Penske Entertainment announced a rebranding to the name Indy NXT.
Early origins
In the post-WWII era, through the early 1960s, open wheel race cars were almost exclusively front-engined "roadsters". The primary ladder series included sprints and midgets. By the end of the 1960s, the cars evolved into rear-engine formula-style machines. Likewise, the feeder series began to follow the same mold. When USAC became the primary sanctioning body for top-level Indy car racing, the ladder of progression began to change.
USAC Mini Indy Series
The SCCA Super Vee and Formula Atlantic series were among the first formula-based ladder series. However, neither had any direct tie to USAC. In 1977, USAC started the "Mini-Indy" series, using Super Vee machines. The series ended after 1980 when USAC stopped sanctioning Indy car races outside of Indianapolis.
Following the end of the "Mini Indy" series, the driver pool in the early 1980s to CART and the Indy 500 was drawn in a somewhat unorganized fashion among Super Vees, Atlantics, SCCA, former Can-Am drivers, sprints, midgets, and even stock cars and off-road racing. In addition, a number of CART series drivers during the 1980s and early 1990s were former Formula 1 competitors, most of whom had climbed the European-based ladder series.
Original series (1986–2001)
The original Indy Lights series was an open-wheeled racing series that acted as a developmental circuit for CART from 1986 to 2001. It was founded in 1986 as the American Racing Series (ARS). CART became the sanctioning body for the series in 1988, and it was renamed as Indy Lights in 1991, with title sponsorship by Firestone. Later, Firestone's subsidiary Dayton Tires took over as tire supplier and title sponsor.
A spec-series, CART Indy Lights used March chassis (essentially a modified 85B Formula 3000 chassis, renamed to Wildcat) from 1986 to 1992. In 1992 Lola became the primary chassis constructor to the series, using a modified F3000 chassis. In 1997, a newly updated and modern-looking chassis was introduced based on an F3000 design. It would remain through 2001. Buick V6 engines were used for its entire existence.
The ARS/Indy Lights series' championship winners included two CART champions, two IndyCar Series champions, seven CCWS race-winners and two Formula One drivers.
The Indy Lights schedule closely followed that of the CART series, and typically had a gap of up to a month while the primary CART teams raced at the Indy 500. The races were usually held the morning of the CART series races, as an undercard event. In early years, the Indy Lights series skipped superspeedway races such as Michigan, but eventually found its way to race there. In some rare occasions, the Indy Lights ran at non-CART tracks, generally as a support race to a series other than CART. In 2001 Indy Lights ran at Road Atlanta the weekend of the Petit Le Mans, and ran at Kansas with the IRL.
By the late 1990s and early 2000s, CART was suffering from financial problems. Meanwhile, in 1996, the rival Indy Racing League was formed. CART canceled the minor league outright after the 2001 season. By this time, the Toyota Atlantic series was equally effective in providing CART with new drivers. In addition, the Atlantics served as a springboard for such drivers as Greg Ray, Sam Hornish Jr. and Richie Hearn to enter the IRL. The Atlantics effectively became CART's primary feeder system, and later became Champ Car World Series' official in-house feeder championship for a time.