The Battle for EV Supremacy

After years of hype, the battle of the electric vehicle heavyweights is on. The Nissan Leaf and Chevy Volt are on the streets. But which one will come out on top? And is only one of them truly electric? In "Battle for EV Supremacy," correspondent Lee Patrick Sullivan looks at the showdown between the Volt and the Leaf.

Lee Patrick takes both vehicles on extended test drives and visits the Volt plant in Hamtramck, MI, and the factory where Leafs will be made in Smyrna, TN. He talks to the engineers who designed the vehicles as well as the workers on the assembly line.

Lee Patrick also examines Nissan's claims that the Volt isn't a true electric vehicle because of its range-extending internal combustion engine. Does the presence of gasoline on board mean it's not an EV? Or does the engine give the Volt an advantage with customers who have anxiety about its 100-mile all-electric range?