Answer:
The person who makes it sells it. The person who buys it never uses it. The person who uses it never sees it. What is it?
Ripped from my ancestors home beaten and burned I become a bloodthirsty killer.
I run around the city but I never move.
I move without wings between silken strings. I leave as you find my substance behind
I come with a train and go with a train and the train doesn't need me but can't go without me.
A little house full of meat, no door to go in and eat.