2024 Ntt Indycar Series. The official indycar website puts it quite simply:  — with nearly the entire grid of the 2024 ntt indycar series field set, the season is scheduled to commence at the streets of st.

 — — ntt indycar series (@indycar) august 17, 2024. The ntt indycar series returns to wisconsin after a fun weekend of racing at portland international raceway.