A fun clip from Pixar about what goes on in the writers room or a storyboard meeting:

Pixar studio stories McQueen has no hands02:18

Pixar studio stories McQueen has no hands

This is a good demonstration of how there's no set way for things to happen in fiction. The character can "produce a map" in a variety of ways, and each one has wide implications on the fictional physiology of the character, but in the end it's just writers and storyboarders picking a design or idea that they like best. The depiction on screen is not inherently related to "powers and abilities" the characters possess; it is only a depiction that the writers or storyboarders chose to present.