Vehicular pollution is one of the biggest contributors to air pollution in urban areas of India. Car sales are projected to almost triple in quantity by the year 2025 and of the 15 most polluted cities in the world,13 are in northern India; the contribution of vehicle pollution to the toxicity of air cannot be undermined. Although steps have been taken by auto manufacturers to curb pollution such as changing the exhaust systems of internal combustion engines, switching to electric vehicles, bio fuels and to hydrogen powered vehicles in coming years. The technology however isn't ready, it isn't economically viable for mass production and it will not be affordable for the average consumers in India.