I am trying to recall some research on humans, and maybe apes, using tools. I read this few years ago, and I'm not sure if I came across this in an academic paper, or just read a few sentences about it on some science website. I think the information had a scientific basis. The gist was that when humans use tools the tool becomes incorporated into our minds image of our body, which is why we can use tools so dang well.
A specific example I remember was driving a car — when you're driving, the whole car sorta becomes an extension of your body in that you can understand where it is in relation to the world around it to a surprising extent.
Is this a real concept or principal in the scientific community? Did I come up with this in some kind of fevered dream? Any material on this idea, if it exists, would be greatly appreciated!