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Cadillac CT6 PHEV battery shape a big departure for GM's plug-in hybrid tech

Anyone with any familiarity with the electric powertrain details for the two General Motors plug-in hybrids will have noticed that the information we have about the newly announced Cadillac CT6 plug-in hybrid has a lot of numbers in common with the Chevy Volt and the Cadillac ELR, like the 18.4-kWh lithium-ion battery pack and an expected all-electric range of 37 miles. We also noticed that the announcement calls the plug-in CT6 hybrid an actual plug-in hybrid and not an "extended range electric vehicle (EREV)," which is what GM calls the Volt and the ELR. This, of course, means we needed to ask GM some questions. Donny Nordlicht from Cadillac communications told AutoblogGreen that while the Volt and CT6 batteries are both 18.4-kWh, the shape is completely different. In the Volt/ELR, the battery is T-shaped (see it here). The CT6 has four seats, with a tunnel running between the two in the rear, as you can see here, but the battery in the CT6 PHEV is "a cube-shaped pack, which is between rear seats and the trunk," Nordlicht said. "There is no pass through." GM has not yet released any technical schematics about this pack, but Nordlicht said that, "The CT6's advanced mixed-material platform was designed to accommodate the PHEV system by design so that it minimally intrudes on the cabin space." It also means that the CT6 can be ordered as an optional PHEV, while the Volt and ELR were purpose-built plug-ins. GM is also distinguishing between the EREV and PHEV powertrains in its vehicles from this point forward. "We are not discarding the EREV language," Nordlicht said. "The CT6 utilizes a two-motor system mated to a 2.0T 4-cylinder engine, which is an all-new system to Cadillac." We assume that the PHEV packs will use li-ion cells from LG Chem, just like the EREVs do, but Nordlicht did not answer our question on that point. As for other details about the CT6 PHEV – like production, full dimension, and pricing – we will just have to wait until closer to when the vehicle launches for those. Related Video:

Cadillac ELR getting massive discounts, some up to $14,000

Well, that didn't go as planned. General Motors had marketed the Cadillac ELR extended-range plug-in as a premium version of the Chevrolet Volt with some Caddy refinements. Now, it looks like that premium, at least from a price standpoint, is shrinking. Shoppers in a number of states are reporting that GM and its dealers are discounting the ELR in order to move more off dealer lots. The issue is that few people are biting at the official price tag of about $76,000, so GM has started offering as much as $8,000 worth of dealer and customer incentives, Transport Evolved reports. More recently, dealers in states such as Florida, Texas and Maryland are offering discounts in the $12,000-to-$14,000 range, and that's before any federal and state plug-in incentives kick in. It's not difficult to guess why. Through the first half of the year, GM sold fewer than 400 ELRs. Last month, Caddy moved just 97 units, or about as many as Tesla sells of its Model S in a day. Perpahs recent spy shots that reveal a test ELR that appears to up the sportiness quotient, with touches such as larger wheels and brakes, will also help sales. Check out Autoblog's "First Drive" impressions of the ELR here.

Is Cadillac working on an ELR-V? [w/video]

Could it be? Could Cadillac be working on an even higher-end version of its ELR plug-in hybrid? Well, General Motors' Executive Vice President Mark Reuss has gone on record as... well, not saying much. The exec was more than a bit coy on video (which you can view below) when asked about the idea of an ELR-V, although he did say that Cadillac was looking at "expanding the tuning envelope" for its plug-in coupe. What that means could be hinted at in these spy photos.
Cadillac is certainly up to something with this little red ELR. As is often the case, it's the car's enhanced brakes that give it away. Bigger binders are a telltale sign of sportier aspirations, and it's safe to say that rule applies with the ELR. The larger rotors and four-piston Brembo calipers are sourced from the Buick Regal GS, which we imagine would be plenty to bring the high-priced hybrid to a halt.
Obscuring those rotors and calipers are larger, double-armed five-spoke wheels. And, according to our spies, hiding behind that camouflage is a new grille. Outside of those two items, though, there's not much aesthetic change.