Answer:
I am the kind of nut that is empty at the center and has no shell.
Although it sounds like I work on a transportation device I actually work in a restaurant.
I am easy to waste. I am unstoppable. What am I?
I can only be played on a windy day
The more you work the more I'll eat.You keep me full I'll keep you neat.
When you take away the whole from me there is always some left.