Claim: Aurora AFX design allowed the manufacture of narrow open Formula 1 style bodies, and they designed an in-line chassis for the longer specialty chassis bodies.
Evidence: The Aurora Plastics Corporation introduced the A/FX (Aurora Factory Experimentals, later simply "AFX") line of slot cars, slot car track sets, and related accessories in 1971. This design allowed the manufacture of narrow, open wheel Formula 1 style bodies. Aurora never designed an in-line chassis for the longer Specialty chassis bodies.