Sleipnir is our human nervous system.
His 8 legs symbolize the 192 nerve-endings.

We shall keep our sleek and gliding superb vehicle perfectly pure. This we do by transcending the sphere of thought to the source of thought,
Glaðheimar,
Ásgarður,
Ægir,
Hnitbjörg,
Ginnungagap,
tívatún (the powerful sphere of tívar, Laws of Nature),
ragnasjöt (abode of rögn (gods)),
The Unified Field of Total Natural Law,
lognfara lundur Barri (see Skírnismál) i.e. nirvaana, where Gerður (mankind) is going to meet divinity, Lord Freyr.

The sphere of transcendence only found within.

एकंसद्विप्र बहुधा वदन्ति  ekam sad vipra bahudhaa vadanti
Thruth is one, the wise call It by many names.

By making Sleipnir, our human nervous system, still in mother´s womb, we individualize our consciousness.
As we do this even before we are born, how are we ever going to see who we are in truth?

Not so hopeless, as we learn to nýsa niður.

Our valkyrja is our act of transcending to Ásgarður.
That is how she is “of service” to us.

Same Sleipnir on Youtube