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Pastor Maldonado took the new Williams for a spin at Barcelona on February 19 following the launch at Circuit de Catalunya. Paul Gilham/Getty Images
The new Infiniti Red Bull Racing RB9 was launched at the Austrian-owned Formula One team's English headquarters in Milton Keynes on February 3. Mark Thompson/Getty Images
Mark Webber, left, and triple world champion Sebastian Vettel pose with the Red Bull they will be driving this year. Richard Heathcote/Getty Images
Title rivals Ferrari launched the new F138 which they hope will power Fernando Alonso to glory in 2013. ferrari/getty images
British team McLaren unveiled its car on January 31. New driver Sergio Perez (right) poses with 2009 world champion Jenson Button and the new MP4-28. ADRIAN DENNIS/AFP/Getty Images/file
Former McLaren star Lewis Hamilton, left, and new teammate Nico Rosberg pose with the new Mercedes W04 on February 4. Justin Davies/Getty Images
Sauber's new C32 was launched in Switzerland on February 2. It will be driven by Perez's replacement Esteban Gutierrez and Nico Hulkenberg, who left Force India in 2012. Harold Cunningham/Getty Images
Force India's Paul Di Resta with the new VJM06 which was launched on February 1 at Silverstone. His new teammate had yet to be named. Mark Thompson/Getty Images
Charles Pic and Dutch rookie Giedo van der Garde launched Caterham's new CT03 car on the first day of preseason testing at Circuito de Jerez on February 5. Paul Gilham/Getty Images
Romain Grosjean was third-fastest on the opening day in Jerez for Lotus, which was the first team to launch its new car -- the E21 -- on January 28. Mark Thompson/Getty Images
