The interior of a train is static, yet the needs of its riders continually change. Some people are in a wheelchair, for instance, and just need some space. Some people carry bikes on with them. For others, such as folks who are carting around luggage, a train seat just gets in the way.
With Chris Precht's redesigned "YO-YO" interior, a train could cater to all those needs. The heart of the system is pull-down, retractable seats that retreat back up into the ceiling when not needed. When all the seats are down, the train interior looks as you'd expect, but they can be easily pushed out of the way by passengers who need special accommodations.
Check out more of Chris Precht's design in the gallery below.