The main focus of this article was hybrid vehicles. These cars would use a combination of internal combustion (which is what the majority of cars use now) and electric power. This article also proposed several alternatives to the classic internal combustion engine, such as developing fuel cells, and using HCCI, GDI, alcohol, and even compressed air as alternative energy options to fuel cars. Another focus of a possible energy source is ethanol-currently considered renewable because it is easily found in sugars and starches. This is also a viable option because most living organisms have developed a tolerance for ethanol gas because it is found in overripe fruits as well. The rest of the article explained how current electric cars are powered.
New sources of energy for cars- Renewable and Nonrenewable energy
Science Daily http://www.sciencedaily.com/articles/a/alternative_fuel_vehicle.htm