Formula One teams want control of the sport's revenues from 2008 but will respect existing agreements, said Ferrari boss Luca di Montezemolo.
Montezemolo said he and the chairmen of the major carmakers had met at the Frankfurt motor show on Wednesday to discuss plans to run their own championship.
"We are not talking of the possibility between now and 2007 to have, like in the United States, a parallel or different formula," he told a media briefing on Wednesday.
"We have signed an agreement, we will respect the contract," said Montezemolo, referring to the so-called Concorde Agreement between the teams, Formula One supremo Bernie Ecclestone and FIA (International Automobile Federation).
"But it is a contract that will expire. At the end of 2007 we are all free. [In 2008] the deal with the FIA for the TV rights, for the commitment with the organisers is finished".