Answer:
Although it sounds like I work on a transportation device I actually work in a restaurant.
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
You cannot keep me until you have given me. What am I?
The faster you run, the harder it is to catch me. What am I?
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
A little house full of meat, no door to go in and eat.