He started travelling at age 14 , and believes that , as of 2004 , he had travelled at least two million miles , including on the Trans-Siberian Railway and through 11 `` round-the-world '' air journeys .
He started travelling at age 14 , and believes that , as of 2004 , he had travelled at least two million miles , including on the Trans-Siberian Railway and through 11 round-the-world air journeys .