Dolls and pyramids

The engine does it's sound
It's unknown when will we be free
When the chains will break
When will our graves be constructed
I assure you it wont be pyramids
Rather modest tombs
Not because we are humble
No, it's because we're no kings!
Like an abandoned doll
Or a car on a junkyard
In the face of millenias
No way we'll be remembered
Eight billion of orbs float in the air
Every one seeks something
So we built a sewer system
And dumped everything to the seas