Zus plugs into a car's 12-volt power point and automatically tells its associated app to save the location of the car when it is parked. Wayne Cunningham/Roadshow.

Two other plug-in hybrid competitors are a bit closer to the Volt’s real world use, but differ in that they also use their gas engines for propulsion, not simply electrical generation.

This is where a 12-volt to USB adaptor comes in. These are designed to plug straight into a traditional 12-volt ‘lighter’ socket, splitting it to provide a number of USB outlets.

The 2011 Chevrolet Volt doesn’t consume a drop of gas or exhale an ounce of exhaust into the air. But not always. It runs on batteries that power an electric motor, but only for 25 to 50 mile… ...

The 2016 Volt is not destined for the average car buyer. Will it ever be? With the new model -- the most significant upgrade yet -- right around the corner, General Motors will likely continue to ...

DETROIT — Troy Clarke, president of General Motors North America, is indisputably what automotive enthusiasts call a “car guy” — one of the surprisingly small number of exec… ...

The Chevy Volt (left) is being bested by the new Prius Plug-in. FORTUNE -- Enthusiasts who are raving about the range assisted, battery-powered Chevrolet Volt are ignoring the 800-pound elephant ...

Today, we get our first official look at GM’s upcoming plug-in electric hybrid, the Chevy Volt. The four-door hatchback looks remarkably different from the sleek concept vehicle that debuted at ...