range-extender

The Chevrolet Volt, an electric car with a gasoline range-extender, goes on sale by the end of this year with a $35,000 price tag.

Tesla Stock: Electric Car Maker's Shares Rise In IPO Debut 2010

GM on the other hand has been developing the Chevy Volt electric car (with an on-board, gasoline range-extender to re-charge the batteries after 40 miles of pure-electric driving) for the last three years and will have the car on sale in late 2010.

Hank Green: Automakers, Fearing for Their Lives, Are Going Green Fast 2009

The Fisker Karma, on display at this year's Geneva motor show, is an electric car that has been kitted out with a four-cylinder, petrol-powered, range-extender engine.

BBC News - Home 2011

When the little range-extender is providing power to the generator, CO2 emissions of the Emas are 60g/km and Combined fuel consumption is in the region of 150mpg.

Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph 2011

But if it had been necessary to suddenly peel off the track and drive home, the petrol range-extender would, after about 35 miles, have started to power a generator and provide sufficient energy to the battery for the trip.

Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph 2011

However, adding a small range-extender engine to drive a generator and keep the batteries charged allows range to be increased to hundreds of miles.

Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph 2011

"But in a range-extender car, the knowledge that you can leave the city is freedom."

BBC News - Home 2011

There is also a third option, though: range-extender technology.

Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph 2011

Also in that issue is "Why Cadillac needs the 2014 Converj," the concept that has won numerous design awards and, if produced, would share the Volt's range-extender powertrain.

Autoblog Green Gary Witzenburg 2010

Range-extended EV's like the Volt would have a combination of numbers: a mpkwh figure for the EV mode, and traditional mpg reading for the range-extender mode.

Autoblog Green Sam Abuelsamid 2010