Toyota have finally confirmed the signing of Jarno Trulli - and the Italian has already had his first drive for the team.
Trulli completes a strong driver line-up alongside Ralf Schumacher and test driver Olivier Panis.
The 30-year-old drove a Toyota for the first time at Silverstone on Thursday morning, having severed his ties with Renault on Tuesday night.
But Toyota insisted that Trulli will have to wait until the start of next season to make his debut for the team.
The deal has been on the cards ever since Trulli announced he would be leaving Renault at the German GP - but Toyota team principal Tsutomu Tomita said negotiations had not been concluded until this week.
Tomita said: "It is no secret that we have been speaking with Jarno Trulli for some time about the possibility for him to join Panasonic Toyota Racing, but contrary to recent reports, we have only finalised contractual details this week.
"Jarno has really shown his maturity and all-round talent this season, both in qualifying and in races, and we believe that he will be the perfect team-mate to Ralf at Toyota from next season.
"On that note, I would like to set the record straight early and stress that there are no driver orders at Toyota; Ralf and Jarno will have equal number one status with us."
Tomita also confirmed that Ricardo Zonta, who has replaced Cristiano da Matta at the last three races, will remain with the team in 2005.
He said: "With Ralf, Jarno, Olivier and Ricardo, I think that Panasonic Toyota Racing will have one of the strongest driver line-ups in Formula 1 for next season.