With today's announcement, she has 'set the wheels in motion' for a run for the presidency. [=she has begun to run for president]
You could almost see the 'wheels' turning in his head. [=you could almost see him thinking about how to do something]
They hoped that the tax cuts would 'grease the wheels' of the economy. [=would help the economy work better]
(..) Engine one is gone! Two's about to blow! Great! Are you a Black Thumb? Alright, engine one. Now! You and me. th wheel. We'll unhook the tank. One man, one bullet. I can't see. / Maadi. I can't see. Hey! (..)2015 Mad Max: Fury Road
(..) He wants them back! Not a hand laid on 'em. By my deeds I honor him. V. V! V! V! That's my wheel!! / I'm driving! You're my lancer. / I just promoted myself!!! Not today. Today is my day! Look at you. If you can't stand up, you can't do war!! (..)2015 Mad Max: Fury Road