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General Motors Co will build a Cadillac luxury electric car based on the technology used in its Chevrolet Volt plug-in hybrid, people familiar with the plans said on Wednesday.

The U.S. automaker's plan for the rechargeable battery-powered hybrid Cadillac, which will be built in 2013 as a 2014 model, would revive plans for GM's Cadillac Converj concept car that won acclaim for its bold design when shown at the Detroit auto show in 2009. The sources asked not to be identified because the product plans have not been announced.

"Right now we don't have anything to announce, but stay tuned," Cadillac spokesman Brian Corbett said.

The news comes at a time when Toyota Motor Corp has begun marketing its 2012 Prius plug-in hybrid.

The Converj was named the best concept vehicle of that show. Automakers routinely show concept vehicles that have not been approved for manufacture at auto shows to build excitement for their brands and explore design ideas.

Read more: http://www.reuters.com/article/2011/...77G5H220110817