Sleeper Raft

Daydreaming is constructive because it takes you out of the situation your in at present when you need to be. It's not just there to make help you be creative. 

I was thinking about an alternate reality where sleeper rafts exist. They are rafts with small cabins on top of them, they are sent through very long aqua ducts that stay level and go between cities. Water is pumped in one end and flows out the other end. 

The cabin on the raft would have a small porch at the back and a folding bench. There would be all the trimmings of a typical hotel room, a small shower bathroom, a bed and even a couch by a table with a tea set that uses a flask instead of a kettle. 

At the front of the raft would be an insulated water tank with hot water for the small shower. Another tank would be there for sewage. There would also be a battery for powering all the lights. 

The point is you would sleep in the cabin and wake up in a different city. The raft would move at walking speed but it would be a smooth ride and you would sleep through the journey. 

The aquaduct is a tube with water flowing through it, the raft floats in the water. I imagine it would feel a bit claustrophobic when you sit in the porch and see that you're in a large tube.