Open the Train car in Fallout 4.

Open the Train car is a quest objective in the mission The Big Dig in Fallout 4.

Quest

The Big Dig
The Big Dig

Location

Goodneighbor
Goodneighbor

Walkthrough

Bobbi will tell you that Fahrenheit likely has the key to the locked train car. Approach her corpse and loot the Hancock's Strongroom Key off her along with any other gear you want.

Open the Train car - The Big Dig

Strategy Guide/Tips

The Big Dig Quest