Chinese consumers are on track to buy more than a million electric cars (EVs) this year, after sales rose 53% in 2017. And China’s leadership is paving the way for an all-electric future, with the goal of selling 2 million EVs annually by 2020 and a total ban on internal combustion engines, which the government says will happen before 2040. China’s enthusiasm for electric cars is based on domestic considerations, but by participating in electric transportation, the world’s largest vehicle market will drive the adoption of electric cars. As China’s production capacity increases, generation prices will fall, as did solar....