Former Formula One driver Gerhard Berger has called on the sport to rediscover a sense of unpredictability if it is to halt the recent slump in interest.
Berger - who drove for Ferrari and McLaren before taking charge of BMW's Formula One engine project - claims grand prix weekends have been ruined by a lack of overtaking in races, prompting viewers to switch off after a handful of laps.
But the Austrian admits there is no simple solution to the problem and wants the sport's rule-makers to discuss the possibilities openly.
He said: "The thing that needs to be done now is to put down in writing various approaches, and to have people who know the business select those that advance our sport.
"We must aim to bring about races in which there is a lot of overtaking and in which it is not certain from the outset who will be the winner".