Answer:
What goes with a car, comes with a car, is no use to a car but a car cannot move without it?
A certain wizard resided in a city made from this gemstone.
What can be seen but never found that only hides in the unwound?
A man parks his car outside of a hotel and immediately realises he is bankrupt. How did it happen?
You use a knife to slice my head. And weep beside me when I am dead.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?