In recent years there has been progress in the study of biofuels, which do not pollute, I refer to biodiesel and bioethanol. Luckily it has been shown to work well, in my city and many buses use it. Until you have seen the wolf's ears, that is, petroleum fuels, if not using a catalyst, which is very expensive, its combustion has already caused serious environmental problems and worse, people who living in large cities. As many of you have heard, because the hole in the ozone layer caused by the emission of polluting gases, greenhouse effect occurs. For many part of this environmental problem, there was another, which means that oil is not unlimited. For these reasons and more, much progress has been made in the last ten years, but the 90 previous.
Another issue is that of electric cars. That if you have studied long before biofuels. I saw it on the buses specifically a Swiss city. But they have many problems of autonomy.
From here we develop the idea. Already exist as Prius hybrid cars that run on electricity and gasoline. Now they are planning hybrid cars with electricity and diesel. But I will go further, if a good solution is the hybrid car, the best thing is that the emission of CO2 were almost nil. For me the solution is a car that runs on electricity and biodiesel or ethanol at the same time, it may be the model of car clean, ecological and sustainable future closer.
Resumiendo, mi idea sería utilizar un coche híbrido que funcione con electricidad y biodiésel o bioetanol al mismo tiempo. Seguro que contamina menos que un híbrido con gasolina.