After successfully competing in New Zealand, Billy moved to Indianapolis in 2021 to compete in the Road to Indy Programme.

Billy joined Exclusive Autosport and has completed his rookie season in the USF2000 Series.

Sanctioned by INDYCAR the Road to Indy is the most successful driver development program in the world providing a unique path to reach the NTT Indy Car Series and the Indianapolis 500. The Progression steps are USF2000, Pro2000, Indy Lights, NTT Indy Cars.

Billy will remain with Exclusive Autosport in 2022 and continue in The Road to Indy Programme.