They'll wonder what Packards were

Meru, by W.B. Yeats

Civilisation is hooped together, brought
Under a rue, under the semblance of peace
By manifold illusion; but man's life is thought,
And he, despite his terror, cannot cease
Ravening through century after century,
Ravening, raging, and uprooting that he may come
Into the desolation of reality:
Egypt and Greece, good-bye, and good-bye, Rome!
Hermits upon Mount Meru or Everest,
Caverned in night under the drifted snow,
Or where that snow and winter's dreadful blast
Beat down upon their naked bodies, know
That day brings round the night, that before dawn
His glory and his monuments are gone.