Greener cars

greener 'cars

when car first appeared,people thought they world cure `pollution not cause it . before German engineer Gottlieb Daimler(1834_1900) invention petrol engines in 1884,transport was powered by horses And horses dung was smelly and hard to clear from streets ! today, cars manufactures aware of the harmful gases that petrol engines produce and are looking for alternative power sources such as hydrogen , electricity and solar energy.