Treehugger has a piece about free hybrid electric buses at Tokyo’s Haneda airport.

What is there not to like about the new shuttle buses at Tokyo’s Haneda Airport - the hybrid electric buses save energy and have less air pollution. They are more quiet and the ride is smooth as silk. Plus they are free. Hino has supplied one while Mitsubishi Fuso supplied three: these cool vehicles now link Haneda’s first, second and international terminals, covering a distance of about 4.2 kilometers, and in one day, they may each travel up to 300 km.

more with photo at
Free Hybrid Electric Buses at Tokyo’s Haneda Airport

See also my Transported : Draft 1(b) of an argument for Free Public Transport