Answer:
I am mother and father, but never give birth or nurse. I'm rarely still, but I never wander. What am I?
Although it sounds like I work on a transportation device I actually work in a restaurant.
What do you get when you cross a snowman with a vampire?
I am an instrument you can hear but cannot touch or see. What am I?
I hide but my head is outside. What am I?
What language does a billboard speak?