set wheels in motion?

[Eway]

"...Tell a counselor or teacher. You don't have to accuse anyone of anything. Simply telling the truth could be enough to set wheels in motion."

What does "set wheels in motion" mean here?

[Red5]

Take a look here: http://dictionary.reference.com/sear...%20in%20motion

[tuangpi]

Or here: http://dictionary.cambridge.org/defi...0116&dict=CALD

set the wheels in motion: to do something which will cause a series of actions to start

E.g. I thought a phone call to the right person might set the wheels in motion.