During the first hour of September 22nd, 2023, CDOT Extra 6707, led by back to back CTrail (CTDX) GE P40BH's 6707 & 6709, tows 10 MBB BTC/CTC-3 coaches into Boston South Station in Massachusetts, completing the 156-mile journey from New Haven, Connecticut. The railcars were on their way back to the MBTA in Boston, Massachusetts after serving a 5-year lease on the Hartford Line in the state of Connecticut.