- The keg apartment is proposed as a program. One can also recognize different strata of architectural solutions in this work. They are grouped here in two versions. The keg wagons can be detached from their cars and can form more stable units for a certain period. A big circular window can be introduced in the vehicle’s cylinder towards the car’s side with the use of an enforced circular frame. This will give the form of a window open to the driver’s section or to any chosen view if the keg stops in a particular way. The circular window can also serve as a projection screen surface if a special tissue is unfolded.