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IndyCar (NTT IndyCar Series)
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IndyCar IR-28 chassis development
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Latest: Alexander Rossi completes first test of IndyCar's new IR-28 chassis at Indianapolis
IndyCar confirmed that Dallara’s IR‑28 chassis will replace the DW12 for the 2028 season, offering a roughly 45 kg (100 lb) weight reduction, a 2.4‑liter twin‑turbo V6 from Chevrolet or Honda, a larger battery‑based hybr