Ambassador By Brian Schmidt | November 2, 2021 | Last updated on August 7, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Ambassador The northbound day train to Montreal, known as the Ambassador, crosses the Connecticut River near Windsor, Vt. It exemplifies the mixed consist the train carried of Boston & Maine, Central Vermont, and New Haven equipment.