And we are rapidly approaching Glacier Gulch which just happens to be the steepest downhill grade in the world...

9 seconds sound clip from the The Polar Express movie soundboard.

You can hear this line at 00:36:30 in the Blu-ray version of the movie.

Quote context

[...]

- They can't hear me.

- They can't? Oh.

- I don't like the look of this. Quick, under the safety bar.

- Is everything all right? What should we do?

- Well, considering the fact that we have lost communication with the engineer...

- We are standing totally exposed on the front of the locomotive, the train appears to be accelerating uncontrollably...

- And we are rapidly approaching Glacier Gulch which just happens to be the steepest downhill grade in the world...

- I suggest we all hold on tightly!

- The pin!

- Jiminy Christmas, the ice has frozen over the tracks.

- Come on, sweetie. Up you go. Up you go. Put your feet on here. On here.

[...]