Analysis of Limited

I am riding on a limited express, one of the crack trains
of the nation.
Hurtling across the prairie into blue haze and dark air
go fifteen all-steel coaches holding a thousand people.
(All the coaches shall be scrap and rust and all the men
and women laughing in the diners and sleepers shall
pass to ashes.)
I ask a man in the smoker where he is going and he
answers: "Omaha."