Race fans watching intently from the grandstands set the scene for this week's RACER Mailbag, where readers' questions span across multiple motorsport disciplines.

General Motors' potential Formula 1 entry generates significant discussion, with the recent acceptance of Cadillac's F1 program for 2026 marking a major development. Sources indicate this move was strategically planned to overcome previous obstacles, with Cadillac taking the lead role similar to Alfa Romeo's previous relationship with Sauber.

Wayne Taylor Racing's operation of the Cadillac GTP program in IMSA for 2025 continues with Andretti Global involved primarily through ownership, though with reduced daily operational involvement compared to 2023. This arrangement has proven more successful, allowing WTR to leverage their expertise in IMSA and hybrid GTPs.

Regarding historical IMSA GTO and Trans Am cars from the late '80s and early '90s, Roush's vehicles shared similar Bob Riley-designed tubeframe chassis, with main differences being engine specifications rather than body design.

IndyCar's future may see a reduction from 27 to 25 cars when new chassis are introduced, according to team owner discussions. This could particularly impact three-car teams, though final details and charter implications remain undetermined.

FOX's NFL pre-game coverage featuring the Indy 500 Pace Car and Will Power's Verizon-sponsored car demonstrates the growing success of Penske Entertainment's FOX partnership, though some paddock members question the choice of featuring a Penske car during the segment.

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