It was like a train, a runaway train, there was no stopping it.

At this point, it's a little bit of a runaway train.

Some folks call her a runaway. A failure in the race. But she knows where her ticket takes her. She will find her place in the sun

Globalisation feels like a runaway train, out of control.

Andersen appears to be doing everything it can to turn this around but nothing is stopping the train from roaring down the track.

They've got a runaway economy, and they're trying to slow it down.