Shower Power is a magazine story.
It is raining hard one morning. When the engines exit the shed to go to work, Diesel spots a big puddle. He races through it and splashes water all over Mavis. Diesel finds it funny, but Mavis does not. Later, Mavis collects some trucks that are full of rainwater. As Mavis rolls under the coal chute, Diesel rolls up with the intentions of splashing Mavis again. Mavis, however, hears Diesel coming and brakes hard. One of the trucks' doors open and water pours out all over Diesel. Mavis thinks it serves him right.