Volvo 'C-30' electric car A model stands with a Volvo 'C-30' electric car at the Auto China 2012 car show in Beijing on Ap...

Volvo 'C-30' electric car

A model stands with a Volvo 'C-30' electric car at the Auto China 2012 car show in Beijing on April 23, 2012. Beijing is hosting the Auto China 2012 exhiition in which top world carmakers will roll out a host of new models as they scramble for an edge amid sharply slowing sales in the planet's largest automobile market. The show runs until May 2. AFP PHOTO / Ed Jones

A model stands with a Volvo 'C-30' electric car at the Auto China 2012 car show in Beijing on April 23, 2012. Beijing is hosting the Auto China 2012 exhiition in which top world carmakers will roll out a host of new models as they scramble for an edge amid sharply slowing sales in the planet's largest automobile market. The show runs until May 2.