The stakes of the electric vehicle race are about more than economic opportunity and bragging rights.Transportation makes up roughly a quarter of carbon dioxide emissions around the globe, mostly through burning fuel, and experts say to meet the goals of the Paris Agreement, it will be critical for as many countries as possible to transition to zero-emissions vehicles powered by renewable energy.

“Transportation is now the largest source of carbon pollution in the United States, and over the last 10 years the grid has gotten a lot cleaner, there’s been a lot more renewables added to the grid. And so the grid has gotten about 33% cleaner over the last 10 years, while gasoline has remained the same old dirty gasoline,” said Constantine Samaras, an associate professor of civil and environmental engineering at Carnegie Mellon University.
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