Hmmm....Not sure I would want someone to pick me up late at night and alone by someone known as "OffWithTheirHeads".
I'm sure it would be safe. After all, if Amber doesn't show up on time, the wino shelter will start searching and contact the police, right? The shelters know that vagrants are always punctual, so alarms will go off if she doesn't show.
And if the shelter drops the ball, surely her dreamboat Dave or his BFF Chad will be alarmed when her arrival time comes and goes with no sign of Amber. Bums like Dave and Chad are always quick to report things like that to the authorities.
If the shelter paperwork gets mislaid, and both Dave and Chad are incapacitated or incarcerated, then Amber's loving family will surely sound the alarm. If she's even a minute late checking into the flophouse and contacting her loving family, they will set off a nationwide Amber Alert.
So it's pretty safe for Amber to get in a car with a strange man at a bus station.