Together with the team, we designed e.g. 2-deck cabin car unit (design and usability). We gave the scabin car unit a shape and look and designed its parts to be easy to manufacture, assemble and replace as needed when still in use. In the design of the cabin car, drivers' everyday life and the needs, usability challenges and wishes of the cabin work environment were studied extensively.

The cabin car unit, like the rest of the control car units, was designed to last on the tracks for at least 50 years. For example, all the instrument panels in the cockpit and the devices and components used in them can be easily upgraded to other ones as technology changes.