Lewis Hamilton says he has no concerns about finding additional motivation to extend his winning streak in F1 despite achieving his lifelong objective to match his idol Ayrton Senna in winning three world titles.

A tenth win of the season in the United States Grand Prix saw Hamilton put the 2015 F1 title out of Sebastian Vettel and Nico Rosberg's reach with three races still to go, the Englishman establishing himself as the third 'winningest' driver in F1 history and only the tenth person to win a trio of world titles.

Also the first British driver to successfully defend his world title, Hamilton's three championships significantly bring him into line with his hero Senna, a feat that hasn't been lost on him.

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"For me it was always to get the three that Ayrton had. Of course, he wasn't from the same country as me but he was the guy that inspired me as a youngster. I don't know where it's going next. There is no-one else I look to, that I want to equal or emulate now.

"I feel like I've got the baton now for myself and Ayrton and I'm going to carry it as far as I can, as strong as I can and keep building and see where I take it."

Despite ticking off a significant life goal, Hamilton maintains that it won't prompt a dip in motivation, insisting he will be just as hungry to win when the F1 heads to Mexico next week.

"The motivation part is really easy, I was born with it so it doesn't go away," he continued. "I don't feel any worries about that, winning is winning, it never gets old. Obviously I still have the motivation for the next race, I want to win the next race. Everything I compete in, I want to win. I don't feel the need to go search for motivation at all."