“Fast Friday” at the Indianapolis Motor Speedway (IMS) is the final full practice day before the Indianapolis 500 qualifying, where teams and drivers push their cars to their maximum speed potential. The name originates from the surge of power and speed achieved as teams adjust their cars to mimic qualifying conditions, enabling them to reach speeds exceeding 240 mph. It is a crucial day for teams to fine-tune their cars for qualifying and a popular event for fans to witness the high speeds and intense competition.