An investigation by Formula One's governing body into last season's Abu Dhabi finale is picking up speed amid speculation the outcome will determine whether seven-times world champion Lewis Hamilton races on or walks away.
The International Automobile Federation (FIA) promised in December "a detailed analysis and clarification exercise" of a controversy it recognised was tarnishing the image of the championship.
It has said it will discuss what happened with all teams and drivers and reach a conclusion before the start of the season in March.
An FIA spokesman said on Wednesday the investigation was being led by Peter Bayer, the Geneva-based secretary general for motorsport, and would be 'thorough, objective and transparent'.