McLaren unveil the new Mercedes MP4-26 car that Englishmen Lewis Hamilton and Jenson Button both hope will make them world champions for the second time
This is the car everyone fears - the new Red Bull RB7 does not look hugely different from last year's title-winning RB6 but everyone expects it to be super-fast
Michael Schumacher and Nico Rosberg take the covers off the pointy-nosed Mercedes MGP02, which the team hope will mark a step forward from a disappointing 2010
Renault drivers Russian Petrov (left) and Poland's Kubica are tasked with challenging Red Bull, McLaren, Ferrari and Mercedes in the black-and-gold car, a deliberate attempt to reflect one of new sponsor Lotus's historic F1 liveries from the 1970s and '80s
Williams's new car attracts attention thanks to its small gearbox - the new car is running in interim colours until closer to the start of the season
The rival Lotus team take to the track on Wednesday with a car that is obviously a big step forward from the boxy T127 they used in their first season
Ferrari launch the F150 at their Italian headquarters in Maranello and it has already been given a brief run out by Fernando Alonso at the team's Fiorano test track
Sauber embark on their 19th Formula 1 season in 2011. Japan's Kamui Kobayashi, 25, lines up for his second year with the team while 21-year-old Mexican Sergio Perez will make his debut in the new Ferrari-engined C30
Japanese rising star Kamui Kobayashi then takes the C30 out for its first laps, doing some promotional filming before the test starts for real on Tuesday
Toro Rosso also unveil their new car in Valencia, with drivers Jaime Alguersuari and Sebastien Buemi hoping it will provide them a platform to show their talents
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