Everyone but Elon himself would say the above is a different scenario from reality. Each of us knows which body our first-person perspective resides in. And that is clearly not the physical human being referred as Elon Musk. But the actual and imaginary scenarios are not differentiated by any physical difference of the world, as the universe is objectively identical.
They are either differentiated by a physically different location of some part of your experience—like your memory being connected to Elon’s sensations, or your thought being executed in other location—or it would be wrong to say that this scenario is different from reality: what you imagine would just correctly correspond to Elon’s experiences also being real.
They are either differentiated by a physically different location of some part of your experience—like your memory being connected to Elon’s sensations, or your thought being executed in other location—or it would be wrong to say that this scenario is different from reality: what you imagine would just correctly correspond to Elon’s experiences also being real.