Lewis Hamilton may have crashed Valentino Rossi's MotoGP bike at the Valencia circuit this week.
The pair swapped their Mercedes and Yamaha machines for a promotional event organised by mutual sponsor Monster, but the media was locked out and no official information whatsoever has been forthcoming.
But two Italian newspapers are reporting information unofficially.
READ: Rossi vs. Hamilton - F1 and MotoGP greats come together for a day in an 'invisible swap' of their rides
La Repubblica said the event took place over eight hours, and that information including photos and footage should be released shortly.
The report said the event went "very well" for both sportsmen who were "as happy as children".
But Corriere dello Sport claims that Hamilton actually crashed Rossi's Yamaha on his MotoGP track debut, even though there were "no consequences" for the six-time world champion.
Earlier on Wednesday, Wheels24 reported that Hamilton had posted an image of himself and MotoGP to his Instagram profile earlier in December and said: "Super excited to swap rides with the legend Valentino Rossi very soon... Watch this space guys."
Monster had organised the test event, which is being dubbed the 'invisible swap' since not a single social media post or any videos have been posted online of the six-times Formula 1 champion on Rossi's Yamaha M1 bike or of the latter in Hamilton's Mercedes 745kW F1 car.