Wolff: 2021 triple-headers will "take a toll" on F1 staff - Autosport

Mercedes F1 team boss Toto Wolff has cautioned against the human cost of F1's expanding calendar, as triple-headers return on the provisional 23-round 2021 schedule

Read more: Wolff: 2021 triple-headers will "take a toll" on F1 staff - Autosport