Racing fans gather in grandstands to watch motorsport events.

Questions about Formula 1, IndyCar, and IMSA are answered in this week's racing mailbag:

General Motors' potential F1 entry following Michael Andretti's step down generated significant discussion. While some hope GM might consider IndyCar instead, there's no evidence supporting this possibility despite ongoing rumors since 2010.

Wayne Taylor Racing's Cadillac GTP program update for 2025 showed reduced Andretti Global involvement. While Andretti maintains ownership, WTR operates more independently now after initial integration challenges in 2023.

The recent Cadillac F1 program acceptance for 2026 marks a significant shift. Sources indicate this move was designed to address Liberty Media's concerns while maintaining Andretti's background involvement, similar to Sauber's arrangement with Alfa Romeo Racing.

Regarding IMSA GTO and Trans Am cars from the late '80s and early '90s, Roush often used identical tubeframe designs with different bodies for both series, mainly differentiated by engine specifications.

IndyCar's future chassis plans may reduce the field from 27 to 25 cars, potentially affecting three-car teams like Andretti, Ganassi, McLaren, RLL, and Penske. Charter system details remain under discussion.

FOX's integration of IndyCar content into NFL programming, including Michael Strahan's Indy 500 Pace Car announcement, demonstrates strong promotional potential, though some question the use of Power's Verizon-sponsored car during the segment.

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