Yamaha presented this eccentric motorcycle model in the past Tokyo Motor Show.
Perhaps this one is the Yamaha bet for the car lovers. The 4 wheels have by motive, in theory, to provide more stability. The wheels are connected to an especial suspension system that allows that the motorcycle tilt over in the curves and remain [...]

This prototype presented by the Japanese brand in the 2007 Tokyo Auto Salon has one single-cylinder of 249 c.c. of 4T with liquid refrigeration.

http://www.youtube.com/watch?v=iEMBLWNWTy0

This model seems to be designed to transport two adults in a very comfortably way. The seat is tall and flat in order to preserve the gravity center near to the ground [...]

Honda has published the photos that will be their prototypes for the 40º Tokyo Motor Show that begins in October 27 in China and Japan. The three prototypes include two retro air motorcycles like the CB1100F and the CB1100R besides this wonder called EVO 6.
Picture: Honda Evo 6

Picture: Honda CB1100F

Picture: Honda CB1100R