It tranforms in different ways such as by heat,mechanical,chemical,EMwaves etc...........
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An alternative  sources of energy for transportation are solar energy , bio gas , electricity  and The Sun is naturally Earth’s most abundant energy source , battery electric vehicle is considered a more efficient alternative to hydrogen fuel propelled vehicle as there is no need to convert energy into electricity since the electricity stored in the battery can power the electric motor.  The most well known types of such energy are solar power and wind power.alternative energy sources to fossil fuels are higher in the transportation sector than in other types of economic activities. 
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