After four and a half tumultuous years in British politics, Brexit is now becoming a reality. NPR's London correspondent Frank Langfitt reports on mixed views about the new deal from a highway outside the Port of Dover along the English Channel, where truckers are trying to cross the border before rules change in the new year. Anand Menon, director of the think tank UK In A Changing Europe, sees the new deal as a win, and says it help avoid further economic disruption.