How can I explain how absolutely heartbreaking and beautiful the last metro car of the night really is?

In the burrow. Im büro.

Kafka sings them into a single metallic tune.

In German, but evident even in a shoddy translation.

In the burrow, Kafka crouches like a field mouse,

Furtive eyes a-glow,

Watching a little,

But mostly feeling the vibrations,

The reverberations of a thousand overlapping, shuffling gaits:

The heartbeat of the underground.

Kafka clings to the walls, and licks a heart clean through the grime.

He can't see it, but the whole frequency of the hovel/tunnel changes,

He feels it in his toes:

Paws a-tremoring, flippers a-dragging, heads a-lolling.

All under neon mosaics made by eight year olds in an inner city school.

The floor lurches and bodies slump. 

Kafka presses his face to the metro walls--

He finds them unexpectedly supple and buries his sunken cheeks even deeper into the soft.

Vagrants gawk and sway (on gentle ripples of intoxication)

But: hark! Kafka feels the steel INTRUDER hurtling

From rattling into sound.

The floor lurches and bodies slump.

Appendages bear adipose deposits across the threshold.

Into: Flash!

Kafka cries, "A reference point!".

But all the shuffling toes were long born away.

Gone and deaf to boot.