WATCH: Why did 2021's F1 drivers pick their race number?
Ever wondered why four-time champion Sebastian Vettel swears by the number five, or why returning double champion Fernando Alonso goes for #14? They, and the likes of Lewis Hamilton and Max Verstappen, explain why they chose their race numbers in this fascinating video.
For Hamilton, his choice to pick #44 came later in his F1 career but the number carries a heartfelt story. While Vettel picked #5 in homage to another World Champion.
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Red Bull's Sergio Perez has a more unexpected story behind his #11 – while Daniel Ricciardo's #3 is based on another famous racer – and Ferrari's Charles Leclerc has a far more pragmatic reason for picking #16.
Watch the video above to find out the unusual, emotional reasons why the 2021 grid picked these race numbers.