Lewis Hamilton 'numb' after Brazilian Grand Prix

Lewis Hamilton says he "feels numb" after crashing out of the Brazilian Grand Prix in his final race for McLaren.

Hamilton collided with Force India's Nico Hulkenberg while battling for the lead in Brazil, revealing the German "didn't say sorry" for causing the accident that led to his retirement.

Hamilton is moving to Mercedes for a "new start" in 2013, ending a 14-year association with McLaren.

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