Sunday's Mexican Grand Prix was always going to be an entertaining one, but no one could have predicted what would happen at Turn Three on the first lap.
Lewis Hamilton needed to finish in the top five to claim a fourth Drivers' World Championship but punctured his back-right tyre when he collided with Sebastian Vettel.
And like Hamilton, Vettel was chasing a top-two finish to keep the title race alive and saw his hopes dashed when his front wing broke.
Both drivers were forced to make an early pit stop and when they emerged, Vettel was 18th and Hamilton was 20th.
Video replays suggested Vettel had enough room to avoid Hamilton, but by no means was it intentional.
In the end it didn't matter, because Vettel finished fourth and couldn't stop Hamilton (ninth) from being crowned World Champion.
In his post-race interview, Hamilton refused to take any of the blame for the crash and said he'd never experienced anything like being last in a race before.
"What could I do?" he said. "I told you I wasn't going to go easy at Turn One. I don't think I was too aggressive. I put my car in the perfect position and I left a lot of space for the car behind.
"I just had to keep thinking forwards. I had no idea what was going to happen to the championship, I was just thinking about getting further up and catching, getting involved in the race.
"Trying to get past people was a disaster. But still I rise. I kept going and I kept coming back."
Hamilton will have now seen the incident for himself and inevitably come to the conclusion that Vettel was at fault.
The Stevenage-born driver won't care anymore, though, because he's World Champion anyway and because of what Vettel did at the end of the race.
Footage has emerged showing what a class act Vettel is. As he drove alongside Hamilton, he took his hands off the steering wheel and applauded Hamilton for winning a fourth title.
VETTEL CONGRATULATES HAMILTON
Well played, Sebastian. Despite losing out to Hamilton and currently being second in the standings, Vettel didn't show any hard feelings and instead showed respect.
In his own interview, the German said Hamilton completely deserved to win: "It's more important what Lewis has done and he's done a superb job all year round and deserves to win the title.
"Congratulations to him. It's not about anybody else today. It's about him. It's his day."