The notion of spirit does indeed have a large number of definitions.
In the dualism of Descartes there exists a body and a separate mind, your analogy seems to be situated on that side, it seems to me?
Absolutely ! But not by a pseudo-scientific approach with limits limited to current knowledge. As for metaphysics, it's very subjective too!
The mind is thus often associated with mental activities, yet the mental activity results solely from the physical functions, which makes say for millennia, especially in the tradition of yoga that the body and the mind are one.
This is the difficulty of knowing whether there is distinction or assimilation.
In the metaphor, the vehicle having all its functionalities present and possible, is a product "dead" not even a coma. In a thousand years, it will not have moved an inch and rusted until its final destruction.
The driver represents the spirit, that is to say, different and separate from this mechanism.
Only the spirit is useless as a means of displacement, only the body can move itself and therefore, it is the union
by functional necessity of the two which gives an animated individual (who has a soul) and there one gets closer to the yoga which finds this union without being able to explain it and refusing, in principle, to envisage an external intervention, that gives their philosophico-religious step.
Regarding your analogy, we are asking ourselves the question, who is the driver?
All metaphors are not exact answers, but lines of thought and all reflection does not necessarily have a rational answer.
In this analogy there is only the finding that the vehicle has no ability to move without external intervention (even with current computers that are directed from the outside too)
Knowing that the driver is endowed with a brain one can recognize the fact that his thought comes from this one, so is it impossible for science to study it?
We can think, imagine anything we want, but the metaphor does not take into account the difference between an "immaterial mind" and a conductor which is material to it, made up of a body like a robot directing another robot and it can last a long time like that. We can therefore study robots endlessly, but not the imaginative thought of the designer even with medical images and piles of electrodes, because matter is limited by matter and its instruments.
and it is difficult and even unimaginable to conceive that beyond a material world there can be something (someone for some) that is not and has not been brought into existence and therefore IS of all eternity beyond space and time, to use the formula of .... ?
So it's useless to masturbate the brain to find an answer, when we are not even made to find it. That's the faith: Believe without seeing our blind eyes! All this has already been seen and reviewed elsewhere.
"We make science with facts, like making a house with stones: but an accumulation of facts is no more a science than a pile of stones is a house" Henri Poincaré