Auto Racing IndyCar Updates | Dallara IR28 Sebring Test | Monday 5 days ago Sports News IndyCar is at Sebring for a two-day test with its new-for-2028 IR28 chassis. Learn about Monday’s takeaways and hear from its test … Post navigation Previous Old and New IndyCar on Track – TOGETHER!Next Sebring, let us introduce you to the IR-28 🤝 #indycar #racing #motorsport