Riders on the 5:40 train to Fitchburg tweeted their train came to a sudden stop in Cambridge after hitting a car at a crossing there. AsianKerr reported [2] the conductor came on the PA not long after:
Sorry folks, we have struck a vehicle.
After getting the remains of the car out of the way and after the train engineer was interviewed by police, the train started back up around 6:24 p.m.