The IR-28 chassis brings a lighter design, twin-turbo V6 engines, and enhanced hybrid powertrain to IndyCar after 15 years with the same car.
https://www.foxnews.com/outkick-sports/indycar-unveils-new-car-coming-2028-replace-current-generation-after-15-year-run
https://www.foxnews.com/outkick-sports/indycar-unveils-new-car-coming-2028-replace-current-generation-after-15-year-run