Both Cadillac and Audi enter Formula 1 in 2026 with world championship aspirations, but their paths could hardly be more different. Cadillac arrives as a customer team using Ferrari power units while it develops its own General Motors engine for 2029, whereas Audi has taken over the Sauber operation and built its own power unit from scratch. Both teams know the road to competitiveness will be long, but each project reflects a distinct philosophy on how to get there.