Ralf Schumacher is ‘excited’ to see who Haas replace Nico Hulkenberg with after he signed a multi-year contract with Sauber ahead of Audi entering Formula 1 in 2026. The Hinwil, Switzerland natives will enjoy their final season as Sauber in 2025 ahead of Audi turning them into its factory F1 entry. Audi sealed full control of Sauber in March to join the travelling circus with a works team when F1 embraces new technical and engine regulations. Yet despite Audi taking Sauber over in 2026, the German automotive giant is already making its presence felt. Haas confirmed that Hulkenberg will leave t…