splitting up player camera from player body

I thought that if we could split up the camera from a player body.
You could teleport the body of / create a manneqin of the player to 1 location,
while having the player with his pov at a 2 location.

This would help if you wanna have the player moving around on an other entity.

Imaging you have an elevator. That elevator moves up and down.
While it moves the player want to move forth and back.

The pov of the player would move in relation to the elevator entity.
The real body is on a real constructed copy of that elevator. 
Able to interact with buttons and levers because the hitbox is comming from the real construction.

Or a ship, or a balloon ship, or a space ship, or a submarine ship