You know, there's just one thing... It's outside my field, but I'm curious. How did he keep that ship in the air for ten hours with only ten minutes' fuel?

17 seconds sound clip from the Dimension X - The Outer Limit by Graham Doar classic radio play.

You can hear this line at 00:27:46 in the radio play.

Quote context

[...]

- That's a very common delusion. End of the world.

- Yeah. I suppose so.

- It's a nice night. Never saw the stars so bright.

- We'd better be getting in, that wind is cold.

- That bomb goes off in thirty seconds.

- Poor Steve.

- You know, there's just one thing... It's outside my field, but I'm curious. How did he keep that ship in the air for ten hours with only ten minutes' fuel?

- Now - about next week.

- Have you ever heard of the Mark Three? The amazing electronic brain at Harvard that instantly solves the most complicated scientific problems?

- Suppose you had a mechanical brain like that in your house? A robot that was always at your service, so that you could just sit with folded hands and relax the rest of your life.

- That would be nice, wouldn't it? Perfect.

[...]