- Well, shall we get cracking?
- After you.

6 seconds sound clip from the X Minus 1 - A Gun for Dinosaur by L. Sprague de Camp classic radio drama series.

You can hear this line at 00:08:00 in the radio play.

Quote context

[...]

- That's a little light for elephant and very definitely light for dinosaur, but we were in a hurry.

- And then, of course, just before we were ready to trek, James showed up and apologized for insulting me.

- He'd had a run-in with the girl and he wanted to go along. And so we were off on safari.

- You all ready, gentlemen?

- Why, yes, I suppose so.

- Now, you've met my partner, the Raja of Janpur.

- How do you do, sir?

- How do you do?

- Well, shall we get cracking?

- After you.

- Let's get going. All set! We'll slam the hatch and off we go.

(HATCH SLAMMED AND LOCKED)

- What happens?

- Nothing, till the force field is built up.

- Ah, there she goes.

[...]