Over the past 50 years the world's vehicle population has grown intensively. It now exceeds 800 million units and will soon reach 1 billion units (2007 - OICA) that burns over 260 billion gallons of gasoline and diesel fuel yearly.

Transport vehicles are currently responsible for 13 per cent of all world greenhouse gas (GHG) emissions and 23 per cent of global carbon dioxide (CO2) emissions from fuel combustion are transport related (ADB report – Rethinking Transport and Climate change).

Transport-related carbon dioxide emissions are expected to increase 57 per cent worldwide in the period 2005-2030, especially in developing countries, like China and India.

Read more in the Environment and Climate Change Topic Information Sheet on Vehicles