Slimbus, The Future Bus
I think this concept is perfect for metro city, like Tokyo, New York, London, Paris, and etc. For reason the rise in oil prices is causing a global crisis, it must be good reason. That’s why car manufacturers are beginning to look increasingly to other energy sources for vehicles of the future.
The Slimbus is one example. It is designed for short-haul routes such as the route between highly populated cities like Tokyo and Nagoya in Japan. The Slimbus is very small and manageable.
Measured only 1.2 m wide and is divided into compartments. With five wheels, this slimbus is really slim. To save space occupiers must go on standing, the seats are optional, disabled for example.



Source
Slimbus : Slim Urban Passenger Bus