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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

2028 IndyCar aero tech tour

2028 IndyCar aero tech tour

IndyCar's 2028 car breaks cover

IndyCar's 2028 car breaks cover

2026 Formula 1 mid-season report card

2026 Formula 1 mid-season report card

Dixon, Kanaan, Franchitti join Legacy Motor Club strategic ownership group

Dixon, Kanaan, Franchitti join Legacy Motor Club strategic ownership group

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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