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Cars have always caused air pollution. In the past, there was a lot more air pollution created by cars than there is today. In the future, there will probably be even less. Two good ways for pursuing the dream of less air pollution are cars that run on solar energy and cars that run on fuel cells. Solar energy and fuel cells don’t cause pollution because they do not give off any exhaust.
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What is a good way for pursuing the dream of less air pollution?
A good way for pursuing the dream of less air pollution is cars that run on water.
A good way for pursuing the dream of less air pollution is cars that run on petrol.
A good way for pursuing the dream of less air pollution is cars that run on solar fuel.
A good way for pursuing the dream of less air pollution is cars that run on solar energy and on fuel cells.