| A mail train chugged along on a parallel track to her left but soon disappeared into a tunnel. |
| Although boats chugged up and down the water on a regular basis, road access was limited. |
| Soon with a whistle and a puff a steam train chugged through the snaky valley below. |
| A world famous steam engine chugged into town for the Swindon Railway Convention. |
| Three hundred feet below, a red inflatable boat chugged out from the beach towards a strong swimmer. |
| Using their mobile phones the drivers rang the fire service and told them of the devastation being wreaked as the traction engine chugged along. |
