I propose a new model of public transportation.

The squat train.

In order to preserve space, we will now have vertical compartments within each carriage. These compartments will have small areas that people lay down in and there will be a small pillow and mattress for comfort.

Pic related, except comfier. We'll market it to locomotive manufacturers in India and they will build a few in some densely urbanised areas. We'll make millions. Who's with me?