FRANKFURT -- General Motors' Opel subsidiary said it is working on an "electric" successor to the Ampera, a plug-in hybrid based on the Chevrolet Volt which hit European showrooms in 2011 but will be discontinued.
FRANKFURT -- General Motors' Opel subsidiary said it is working on an "electric" successor to the Ampera, a plug-in hybrid based on the Chevrolet Volt which hit European showrooms in 2011 but will be discontinued.