Martin Whitmarsh delighted with Jenson Button's heroics

McLaren team principal Martin Whitmarsh is delighted after Jenson Button's dramatic last-lap overtake of Sebastian Vettel gives the team victory in the Canadian Grand Prix.

Button won an incident-packed race in which he collided with his team-mate Lewis Hamilton and Ferrari's Fernando Alonso. Whitmarsh believes a post-race investigation by the stewards into the collision with Alonso will absolve the 2009 world champion of all blame.

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