PATRICK DUMAS / EURELIOS / SCIENCE PHOTO LIBRARY PATRICK DUMAS / EURELIOS / SCIENCE PHOTO LIBRARY
Mad Dog II solar-powered car. The pilot's head is seen in the cockpit. The car is powered by stored electricity generated by solar panels on the back of the car. Solar panels are collections of photovoltaic cells, which use a light-absorbing material to generate electricity from sunlight. The material used here is silicon. Solar power is a clean form of energy compared to petrol engines, as solar panels do not produce pollutant gases. Mad Dog II was built by a British team in 1998. It has a lightweight carbon fibre body, and reached speeds of over 40 kilometres per hour. It was donated to the Science Museum, London, in 1999.
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