TPC stands for Testing of Previous Cars and it allows F1 teams to overcome the restrictions of how much testing is allowed.
Romain Grosjean has returned to the cockpit of a Formula 1 car at Mugello on Friday as he completed a session for his old team Haas.
Mick Schumacher raced for the Haas F1 Team in 2021 and 2022 and is a factory driver for Alpine in the World Endurance Championship sports car series.