For the last few years Barrett-Jackson has become the place to sell “production firsts” like the Dodge Challenger, Corvette ZR1, and Shelby GT500 KR to name a few. For 2010, it seems we’ve run out of new muscle cars to auction off, but Cadillac decided to take advantage of a captive and wealthy audience to unload the very first production 2011 Cadillac CTS Coupe. We’d probably be more interested if it was a CTS-V Coupe, as we don’t see a run-of-the-mill two-door CTS becoming a collectible, regardless of when it was produced.

Still, we can’t fault Cadillac too much for bringing the first CTS Coupe to Barrett-Jackson, since all of the winning bid minus the cost of the car will be donated to the College for Creative Studies. The top bidder doesn’t get this exact car, but instead gets to special-order his or her own CTS Coupe with the choice of color, engine, transmission, trim, and any options. So what’s it worth? The car sold yesterday for a respectable price of $95,700 including buyers commission.

Let’s just call this one the Cadillac XTS Platinum “Concept.” For reals y’all, this is one of, if not the most production ready “concepts” we’ve ever seen. For its part, Cadillac stuck to the “It’s just a concept” mantra. Though they might as well have all been nodding, elbowing and winking. If When the new XTS sees production it, will replace both the STS and the DTS.

For you tech geeks out there, this new Caddy is fairly intriguing. The all-wheel-drive powertrain is motivated by a plug-in two-mode hybrid consisting of the brand’s 3.6-liter direct-injected V6 coupled to an electric motor. Cadillac was tight-lipped on the power rating, hemming and hawing before saying “around 350 horsepower.”

That may not sound like buckets of oomph, but when compared to the Mercedes-Benz S400 Hybrid – the XTS’s probable direct competitor – makes 295 hp. The XTS theoretically makes 295 pound-feet of torque, too. For those of you not geeked on the hybrid bandwagon, Cadillac’s general manager Bryan Nesbitt posed an interesting hypothetical question, “Is the largest displacement engine the only symbol of luxury?”

As for the XTS itself, it looks like a big Cadillac., which if you stop and think about is is a good thing. Cadillacs should be big, and this sucker is large – within a couple of inches of the Mercedes-Benz S-Class, according to both Caddy and our highly unscientific eyeball-based measuring system. We also thought the XTS was significantly better looking in person than in the preview pictures that broke last night. Supposedly there are lots of design cues borrowed from Cadillac’s legendary Sixteen Concept, but aside from the grille we’re not seeing it.

The XTS has its own mojo going on, especially when it comes to the interior. Here’s where the Platinum part comes in. Nesbitt explained that Cadillac intends the XTS Platinum to be a “personal headquarters.” We’re not going to buy into the CEO and wannabe CEO pandering, but lordy is the interior fabulous. Featuring intricate laser-perforated stitching on the leather and synthetic-suede bits with sharp looking burled wood covering everything else, we have to say that with the exception of the Bentley Mulsanne, the XTS Platinum Concept has the best interior at the show. Call it the Cadillac of interiors.

At this morning’s XTS Platinum and CTS-V Coupe debut here at the Detroit Motor Show, newly appointed brand manager Bryan Nesbitt announced to the media that that all Cadillac models will receive V-Series and Platinum models. However, during the media scrum that followed the conference, we sought clarification from Cadillac spokesman David Caldwell, and he stated that future Cadillacs will receive a V-Series or a Platinum model. Thus, if you had visions of an Escalade-V dancing in your head, well… don’t.

The prevailing logic behind which models will get a V or a P will depend on the model’s market segment and inherent sportiness. As Caldwell explained it to us, a model like the CTS has a foot in both worlds (and could probably pull off both), but models like the SRX or Escalade lend themselves more to the heightened creature comforts of the Platinum experience. Some Autobloggers remain a bit foggy on why General Motors’ luxury brand needs what is effectively a double-prestige trim level (shouldn’t all Cadillacs be posh by definition?), but we do appreciate the added accouterments all the same.

And as to the possibility of a CTS-V Sport Wagon? Well, we got a wink-wink, nudge-nudge when we suggested to Cadillac that we’d like to see it, and judging by the smiles all ’round, it’s all but certain that we’ll be seeing its debut on the show circuit later this year.