O’Gara departs Chip Ganassi Racing after 12 years where he was a fixture in its IndyCar program, ran its IMSA WeatherTech Sports Car Championship and FIA WEC efforts, and recently oversaw its Indy NXT team.

IndyCar chassis details, Rockingham and Bowman Gray Stadium races among topics in the RACER Mailbag this week.

Dennis Reinbold and his partners in the Dreyer & Reinbold Racing team are working to expand their IndyCar Series program beyond the Indianapolis 500.