Spanish GP: Lewis Hamilton 'blown away' by season start
Lewis Hamilton is "blown away" by the success he has had at the start of the season after winning three of the opening four races, and says his new contract with Mercedes will be signed "eventually".
Meanwhile, Hamilton's team-mate Nico Rosberg says he got a "boost" from his on-track fights with Ferrari in Bahrain, but Sebastian Vettel still believes the Mercedes cars are much quicker.
At McLaren, Jenson Button and Fernando Alonso both believe points are possible at this weekend's race, but it is not their primary target.
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