This is actually a relatively silly use case for this. A lot of the actual difficult things that a mechanic can do for you usually involve more strength than you have. Or just experience in actually working with things that they can't see.
Now, a mechanic using this to "see" things that are actually in control of a remote robot? Pretty cool. Showing you the thing that is right in front of you? Cute, but ultimately silly.
Now, a mechanic using this to "see" things that are actually in control of a remote robot? Pretty cool. Showing you the thing that is right in front of you? Cute, but ultimately silly.