RACER’S Marshall Pruett has spent the last year tracking developments with the IndyCar Series’ new chassis, engine, and the rest of what’s on the way for 2028.

IMSA's new GTP cars make use of an interesting transmission, Code Name P1359, that works with an electric partner which spins to an RPM level twice as high as the internal combustion engines and makes power that gets sent throughout the cars and puts that power to the ground. Take...