Of course hybrid cars aren’t perfect they still run on fossil fuel and so pollute the environment to some extent. However they may be the first step along the road to cleaner greener cars, car manufacturers are already working on vehicles which run on hydrogen. The only emission from these cars is harmless water vapour. These are still some way in the future though as designers need to think of cheap and safe ways of producing transporting and storing hydrogen but at last it looks like we might be heading in the right direction.