Take The "Hy" Road

The average bus can replace about 40 cars. The Sierra Club of Canada is very precise about the benefits: one person taking public transit produces eight times less carbon dioxide than someone driving their car. Better yet, buses in several cities around the world are going cleaner and greener.

• Hydrogen buses, which run on water vapours rather than fossil fuels, are already being tested in several cities around the world, including Amsterdam, Barcelona, Berlin, London, Perth and Stuttgart. You'll know if you're boarding one because the front of these buses is identified by the words "Hyfleet" or "Emission Free".
• Other cities, like New York and Toronto, have chosen another "hy" powered option - a fleet of hybrid buses.