Carmakers are spending heavily to develop and improve electric cars to meet increasingly tough government regulations limiting air pollution. That is even though current electric models do not enjoy high sales because of limited range, higher price, and a lack of fast-charging stations. Analysts think that as batteries get better and costs come down, electric sales may eventually take off. According to research and analytics firm IHS Markit, battery-only cars were 0.57 percent of global production in 2016 and will increase to 0.86 percent in 2017.
Source : http://www.nwitimes.com/business/transportation/cars/electric-cars-dominate-the-buzz-at-frankfurt-auto-show/article_52704886-d2b3-5b12-8519-577c8a7a3d23.html