Functional Bedrock Laundry

What does Fred and Barney do when the laundry is stacked and the home washing machine is not working? He goes to the laundry. And how was a laundry operating in the Stone Age? I was trying to build a recent cave drawing.

The full name of the building sounds like a hamster wheel inspired washing machine. It is based on the hamster wheel principle. The difference here is that the animal is running on the outer surface of the wheel, which is also the drum of the washing machine. At the back of the washing machine is a technic axle that rotates the drum. Because of the drum rotation, the Prehistoric Dog jumps up and down imitating running.

I hope you enjoy my building.