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]
(..) There was a road to a kingdom, and there was a rock in the road. And people would just avoid it, but horses would break their legs on it and die, wagon wheels would come off. People would lose the goods they'd be coming to sell. That's what happened to a little girl. The cask of beer her family (..)2017 TvShow: The Walking Dead Title: Rock in the Road Season: 7 Episode 9