While electric vehicles only make up a tiny 0.2 percent of passenger cars around the world, that number is growing, and growing fast. In 2016, there were 2 million EVs on the world's roads, up from "virtually non-existent" in 2012. Nearly 200,000 electric vehicles were sold in the U.S. in 2017 alone, a new record.
This boom in electric car ownership has corresponded with growth in public charging infrastructure. EVgo, the largest public network of fast-charging stations in the U.S., charged 40 million miles of electric driving in 2017. That's a dramatic increase compared to the 22 million EV miles charged in 2016.