Runaway Train

I'm on my train of thought
And I fear it's runaway
The schedule is for naught
It changes everyday
I've tried the brakes it will not stop
Much to my dismay
Station to station none stop
Not a moment to waste
We must arrive by 5 sharp
My thoughts must not run late
They have to be prompt
We speed forward at an alarming rate
We see a wall we try to stop

"It's futile says the riders"
And they are right
Boom no survivors
What an awful sight