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2028 extension

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IR28 impresses as Rossi completes first validation test at Indy

IR28 impresses as Rossi completes first validation test at Indy

Watch IndyCar’s 2028 Dallara IR28 in action at IMS

Watch IndyCar’s 2028 Dallara IR28 in action at IMS

2028 IndyCar aero tech tour

2028 IndyCar aero tech tour

Pajari closes on WRC Rally Finland home win after Ogier crashes out

Pajari closes on WRC Rally Finland home win after Ogier crashes out

IndyCar's 2028 car breaks cover

IndyCar's 2028 car breaks cover

Doonan bullish on long-term future for IMSA/ACO alliance

IMSA

Doonan bullish on long-term future for IMSA/ACO alliance

By RJ O’Connell - Oct 9, 2025, 3:15 PM ET

IMSA chief supports a further step of convergence upon a single platform of technical regulations for top-tier prototype racing by 2030.

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