Answer:
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around.
I can sizzle like bacon, I am made with an egg. I have plenty of backbone, but lack a good leg. I peel layers like onions, but still remain whole. I can be long, like a flagpole, yet fit in a hole.
Different lights do make me strange, thus into different sizes I will change.
What goes with a car, comes with a car, is no use to a car but a car cannot move without it?
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.