Answer:
Sends paper without using the post office.
What has one head, one foot, and four legs?
Can be achieved in a car or as a position during conflict
In the middle of night, I surround the gong. In the middle of sight, I end the song
They are toothy nocturnal immortals.
In birth I spring forth, in life I unfold. In death I wilt and die, but rebirth restores all.