The Volt has been under development since 2007. It has a small gasoline engine dedicated to recharging its battery. This allows the Volt to run more than 500 kilometers, as opposed to just over 60 kilometers on battery power alone.
Meanwhile, Nissan says it will price its electric model, the Leaf, at about 33,000 dollars for the US market. That's about 20 percent below the planned price for GM's Volt.
Nissan said on Tuesday that it will start selling the Leaf in December in 5 states, including Oregon and California.