An electric car is a vehicle propelled by an electric engine with no need of fuel. High prices of oil and real concerns about the greenhouse gas emissions made think about the real necessity of having an alternative to gasoline cars. As a result, during the late 20^th century the attention of engineers and researchers was focused on developing electric cars which could be commercialized.

Electric cars have several potential benefits as compared to conventional gasoline automobiles: a significant reduction of air pollution, reduction of greenhouse gas emissions (it depends on the type of battery used), and less dependence on oil, which for developed and emerging countries is cause of concerns about their vulnerability to price shocks and supply disruption.

Despite the benefits that we have just mentioned, commercializing electric cars endures several important limitations. First of all, electric cars are significantly more expensive than conventional internal combustion cars and than hybrid electric cars. In addition, cost of lithium-ion batteries do not make them more interesting for public. On the other hand, they go a lot shorter distance between recharges than a conventional automobile can go between refuellings.

Nowadays, there are some marks available for purchase in some countries as the United States, Japan, Denmark, France, the United Kingdom, Norway, Finland, Austria, and Switzerland. There are three types of electric cars depending on the maximum speed they can reach: slow speed (Dynasty IT, GEM Car, ZENN, etc) city speed (Kewet Buddy, Citroën C1 ev’ie, Subaru Estella EV), and highway capable (Th!nk City, BYD e6, Citroën C-Zero, etc)

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