With developments in clean tech, we are only a few years away from the widespread introduction of electric vehicles. These days, if you are looking for a fully electric long-range vehicle, your options are limited. In fact, Tesla vehicles are currently the only cars that have an official range of more than 200 miles per charge.  But it won’t be long before there’s an influx of long-range electric cars hitting the market. Major automakers, including GM and Volkswagen, have vowed to roll out more than one fully electric car by 2020.Here’s a look at some of the vehicles hitting the roads in the next few years.