With 100 million auto rickshaws in use across Asia, student teams from Dutch and Indian universities are taking the challenge to design the cleanest, cheapest and most practical upgrade kit to cut carbon emissions from their incredibly polluting, two-stroke motors. Each of the rickshaws, known as tuktuks in India, creates as much pollution as 50 cars, and project organizers have set themselves the goal of adapting one million of them to reduce their CO2 emissions by 40-60%.

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