Explainer: For the future of electric vehicles, one size does not fit all

In an effort to jumpstart adoption of fuel cell electric vehicles, Toyota Motors earlier this month made more than 5,600 patents available to other carmakers. A few days later, General Motors introduced the electric Bolt, an electric vehicle designed to run 200 miles on batteries. Automakers, meanwhile, continue to develop yet other types of electric vehicles: plug-in hybrids and hybrid electrics. Electric vehicles are the most promising alternative to conventional gasoline and diesel-powered cars. But how is each technology different? And what are the relative benefits and commercial challenges to each?