As if it wasn’t already obvious, given GM is about as good at holding its secrets as a tissue is at holding water, the Cadillac->ke18 ELR has finally been confirmed for production. Production will kick off in late 2013 in the automaker’s Detroit-Hamtramck factory alongside the Chevy Volt,->ke2721 Opel Ampera, and Holden Volt. This will also bring about $35 million in updates to the plant in order to get it ready to handle the extra production and this high-tech extended-range EV.

There are still no exact figures on its driveline, but we all assume it will be based on the Chevy Volt’s platform. GM’s presser does let us know that the ELR will feature a T-shaped lithium-ion battery and will run primarily on electricity. Once the battery becomes discharged, a 4-cylinder engine will kick in to recharge the battery.

We’re all anticipating – maybe more like hoping – that if the ELR uses the Volt’s drivetrain, GM will retune the system to be a little more performance-oriented. Given the sporty look of the concept version of the ELR, it just wouldn’t sit right with us if the ELR takes over 9 seconds to get to 60 mph, like the Volt does.

We’ll keep an eye on the ELR’s progress and relay its official specs to you just as soon as GM leaks – err – releases them.

Click past the jump to read GM's full presser.

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