Early Origins
During the early 1960s, open wheel cars were front engined roadsters. The primary ladder series included sprints and midgets. By the end of the decade, and into the 1970s, 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.
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 largely unorganized fashion amongst Super Vees, Atlantics, SCCA, former Can-Am drivers, sprints, midgets, and even stock cars.
Read more about this topic: Firestone Indy Lights Series
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