Lewis Hamilton: 2015 'an incredible year of growth'
Newly crowned three-time Formula 1 world champion Lewis Hamilton believes that 2015 has been an "incredible year of growth" for him.
Hamilton clinched back-to-back titles at the United States Grand Prix last weekend, the first British driver ever to achieve that feat.
Speaking to BBC F1 presenter Suzi Perry, in a wide-ranging interview, Hamilton says that he is feeling "pretty mellow" now but describes some of the anxieties he had during the US Grand Prix, while complimenting team-mate Nico Rosberg on how hard he has pushed him this season.
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