The Cadillac Converj will be the second GM vehicle built on the automaker's system combining a lithium-ion battery pack with a traditional engine as backup, GM Vice Chairman Bob Lutz said late on Sunday.

The rechargeable or plug-in Cadillac is "heading for production" and will be designed, like the Volt, to be driven for 40 miles on battery power alone, Lutz said.

The Volt is expected to be priced near $40,000. The Cadillac variant will use technology developed for the Volt and will be aimed at consumers "who don't mind paying a large price for a luxury vehicle," Lutz said.

He said production plans for the Converj had yet to be determined but that it would not go on sale before 2013.

The comments from Lutz, who was speaking at an event organized by the Society of Automotive Analysts in Detroit, marked the first indication of the next step in GM's plug-in hybrid development efforts since the shake-up in the top leadership of the automaker late last year... reuters.com        Find your Cadillac!