Mercedes F1 boss Toto Wolff says a contract extension between his team and Lewis Hamilton is likely on its way, as the seven-time world champion feels he can hold his own on the grid for “another five years”. Hamilton’s future in Formula 1 is regularly the subject of speculation among pundits. A consensus emerged earlier this year guessing that the Briton would conclude his career at Mercedes at the end of 2023, or the term of his current contract with the Brackley squad. Last year, Hamilton himself hinted that he would be gone from the sport by the age of…