GM's Australian brand Holden is currently carrying out the development work but there's no confirmation of whether it has received the green light for production yet.

Autoweek.com issued a press release today divulging GM's intent to build a V12 Cadillac super sedan based on the Cadillac Sixteen concept car first shown at the NAIAS in 2003. GM's Australian brand Holden is currently carrying out the development work but there's no confirmation of whether it has received the green light for production yet. GM hopes such a vehicle will carry the Cadillac brand up into the upper echelons of the luxury segment which is currently dominated by Audi, BMW and Mercedes. Dubbed, Cadillac Twelve , two of GM's common 60-degree 3.6 liter V6 engines will be joined together at the crank thus creating a V12. It will also receive the latest technology known to be found in today's top-end luxury vehicles such as collision avoidance, GM's cylinder deactivation, state-of-the-art automatic gearbox and many other options never offered before by GM. A couple of images of the Cadillac Sixteen concept car after the jump

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GM Might Build Cadillac V12 Super Sedan