Architect Gary Chang has been a favorite of mine since 2010 when I saw how he redesigned his childhood 330 sf Hong Kong apartment.  With pushing walls that are on ceiling and wall tracks Gary can transform his space into 24 different rooms.  Today's design needs are increasing along with populations in big city, there are few options than challenging our stander design practices.
Design smarter, design forward.

Even the German car company, Audi known for their engineering and ingenuity has a youtube video on this apartment.  Want to bet they are disappointed they didn't design it first?  Designboom has a great interview with some of Chang's original sketches too.