燃料电池
There are also demonstration models of buses, and in 2011 there were over 100 fuel cell buses deployed around the world. Most of these buses were produced by UTC Power, Toyota, Ballard, Hydrogenics, and Proton Motor. UTC buses had accumulated over of driving. Fuel cell buses have a 30-141% higher fuel economy than diesel buses and natural gas buses. Fuel cell buses have been deployed in cities around the world, although a Whistler, British Columbia project was discontinued in 2015. The Fuel Cell Bus Club is a global cooperative effort in trial fuel cell buses. Notable projects include: