Nelson Piquet Junior has revealed that he will test with the BMW WilliamsF1 team again in January, and that it would be a 'dream' come true, should he be chosen to replace Juan Pablo Montoya in 2005, when the Colombian will depart to drive for rivals McLaren.

Piquet Jr. who tested for Williams earlier this month, driving the FW25 at Jerez, impressed the team, chief operations engineer, Sam Michael, commenting at the time, that: "Nelson and Nico [Rosberg] did a good job and worked well with the team, as well as showing themselves to be technically competent."

Piquet told Crash.Net Brazil / formula news: "If they, Williams, want me as a test driver, it will be a year to learn a lot. We can never say anything, but we never know.

"The ideal situation would be to win the British F3 championship in 2004, have a good year as a Williams test driver and then, who knows, be prepared to replace Juan Pablo Montoya for 2005."

Williams have still to confirm if they will have a second tester in 2004, and while Antonio Pizzonia might be considered favourite, having worked with the Grove squad before his disastrous move to Jaguar, Nelson Piquet Jr. or Nico Rosberg might also be possibilities, to team up with 'third' driver Marc Gene and racers, Montoya and Ralf Schumacher.

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