Thirty years ago this week Ayrton Senna announced his arrival as a star of the future - and at the same time kickstarted his complex relationship with Alain Prost, the man with whom his name would be inextricably linked for the next decade.
It happened not at a grand prix but a race for Mercedes saloons, a one-off event that featured perhaps the most star-studded grid ever assembled. The field included nine past world champions, and in Senna and Prost two men who would claim the crown in the future.
The occasion was the opening of the new, shorter Nurburgring in May 1984. Formula 1 was due to return that October, and the organisers were keen to do something to showcase their revitalised venue.