Jarno Trulli has admitted he does not know what to believe about October's Japanese Grand Prix.
On the one hand, leading MotoGP riders are refusing to travel to the country in the wake of the Fukushima nuclear disaster.
But the Suzuka circuit insists there is no health risk in the region, prompting Bernie Ecclestone to agree that the race "will go on as usual".
"Before answering this question (about Japan) we should ask one about who is telling the truth," veteran driver Jarno Trulli is quoted in Italian by Eurosport.
"The experts have assured there is not any kind of danger, but who knows exactly? It's difficult because we live in a world where you should only trust yourself."
The experts have assured there is not any kind of danger, but who knows exactly?
But the panel at the Italian-language FOTA fan forum on Wednesday - comprising Trulli, Nico Rosberg, Stefano Domenicali, Paul Hembery and engineers for Sauber and Toro Rosso - insisted that F1 should travel to Japan.
German Rosberg said the Grand Prix drivers' association GPDA had done its own research and found that the area around Suzuka is safe.