Ewan McGregor is embarking on a round-the-world motorcycle trip with fellow actor Charley Boorman. The three-month pilgrimage, which will be the basis for a documentary, is slated to begin this week in London and conclude in New York City in July. The adventure-seeking pair will travel by road the entire time, except for a train trip under the English Channel, a short flight across the Bering Strait and a weeklong Carnival cruise from London to New York City.