dream of a lifetime has come true, Vettel said. When I was a kid, Michael Schumacher in the red car was my greatest idol and now it's an incredible honor to finally get the chance to drive a Ferrari. I am extremely motivated to help the team get back to the top. I will put my heart and soul into making it happen. Vettel will partner Kimi Raikkonen -- the last man to win a world title with Ferrari in 2007 -- in 2015 but there are no guarantees the car and its Ferrari engine will be any match for the might of Mercedes. Who will drive for McLaren ? McLaren has tried to dampen speculation over just who will be in its cars in 2015 in the build-up to this weekend's season-ending race. We know you 're awaiting news on our driver line-up. We 'll announce after December 1 -- you 'll hear it here first, the team said on Twitter. Alonso remains the red-hot favorite to take one of the seats but the future of current drivers Jenson Button and Kevin Magnussen remains unclear. Button -- the 2009 world champion with Brawn Grand Prix which has since morphed into Mercedes -- has remained sanguine about his future and has even explored the idea of moving to sports car racing. Danish rookie Magnussen is fiercely passionate about staying with McLaren, the team which gave the 22-year-old his F1 debut in 2014. There is no Plan B, the Dane told CNN when asked if had explored his options if he