Cars are major contributors to global greenhouse gas emissions. There are over one billion cars in the world today and the vast majority of them run on gasoline. In an effort to cut not only cars’ contribution to greenhouse gasses but also to reduce the reliance on gasoline. Many car companies have introduced electric cars. The two most popular electric cars in the United States are the Chevrolet Volt and the Nissan Leaf. Though these are the most frequently purchased models in the U.S., a recent auto show in Frankfurt unveiled a variety of electric car models produced by a considerable number of new car companies. Read the article below to find out more.