Former F1 team boss Franz Tost believes Sauber (soon to be Audi) have missed an opportunity to sign German driver Mick Schumacher for the 2025 Formula 1 season. On Wednesday, Sauber confirmed they will put Gabriel Bortoleto alongside Nico Hulkenberg in 2025. Tost himself would never choose Bortoleto because he is "a risk factor".