Although there are more and more electric cars to choose from, think the Nissan Leaf, BMW i3 or the Tesla Model S, electric cars are still a small portion of cars sold in the US.
One reason might be that most electric cars get fewer than 100 miles on a full charge. That's a small fraction of what a gas-powered car can do.
But that could be changing.
Scientists around the world have been hard at work for years trying to develop a battery which will challenge the dominance of the internal combustion engine.
It's a fascinating endeavor and one that Steve Levine wrote about in his new book "The Powerhouse: Inside the Invention of a Battery to Save the World."
Here he is reading from the first chapter: