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Cadillac Converj
Cadillac Converj
As part of a strategy to change its image as a technology laggard that's indifferent to environmental concerns, GM has been allowing unprecedented media access as it develops the Chevrolet extended-range electric car. The Volt is expected to go on sale in 2010.

The Converj concept shows what a luxury version of the Volt extended-range electric car could look like. It uses what GM is now calling the Voltec propulsion system, which allows a car to drive up to 40 miles on plug-in electric power only. If extra range is needed, the car can then rely on a small on-board gasoline engine.

NEXT: Dodge Circuit

Last updated January 13 2009: 3:59 PM ET
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