2028 extension | RACER

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Mazda MX-5 Cup | Round 9 - VIR | Livestream

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Mazda MX-5 Cup | Round 9 - VIR | Livestream

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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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