On the track, the battle for supremacy between Lewis Hamilton and Sebastian Vettel is always intense.
Away from the Formula One circuits, though, the two rivals clearly have a mutual respect, as seen by a gesture posted by F1's official Twitter account following the season-ending Abu Dhabi Grand Prix.
It was another dominant year for Mercedes driver Hamilton, who won a fifth world title, with Ferrari star Vettel once again having to settle for second best.
The two offered a heart-warming gesture, though, swapping race helmets in a manner similar to how footballers exchange jerseys at the end of a game.
"It's actually the first time we've swapped helmets I think," Vettel said.
"Five championships is a great achievement. I hope I can stop you winning more!"
Hamilton joked: "You've got a small helmet! I'll not be able to use it, you'll be able to fit mine on."
Watch the full video here below.
They battled fiercely all season on track...
— Formula 1 (@F1) November 26, 2018
But off the circuit, there's ultimate respect between Lewis and Seb pic.twitter.com/UVhM6ehF2G