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Junkyard Gem: 1981 Cadillac Eldorado with V8-6-4 engine

Skyrocketing fuel prices caused by geopolitical events in 1973 and 1979 led to gas lines, federal fuel economy requirements, and an increasing reluctance on the part of American car shoppers to buy big, thirsty Detroit luxury machines. General Motors had pulled off some amazing technological feats in the past — the small-block Chevrolet V8 engine and Hydramatic transmission being two extraordinarily successful ones — and so Cadillac's bosses figured that a combination of computer wizardry and clever mechanical engineering would give the 368-cubic-inch Cadillac V8 a cylinder-deactivation system and resulting superior fuel economy. Here's a very rare example of one of those 1981 Cadillacs, found in a California self-service wrecking yard. The idea behind the V8-6-4 was that computer-controlled solenoids would physically disengage the rocker arms for one or two cylinders on each engine bank under low-load conditions, converting the engine from a 368-cube V8 to a 276ci V6 or 184ci V4 (that's 6.0, 4.5 or 3.0 liters, respectively, for the metric-system aficionados among us). This sort of variable-displacement magic is commonplace today, but it was science-fiction stuff in 1981. An "MPG Sentinel" display on the dash would let the driver know how many cylinders were active at the moment, and the car would get Chevy Citation fuel economy with Cadillac luxury. The V8-6-4 was the standard engine in all 1981 Cadillacs (except for the Seville, which had the troubled Oldsmobile diesel engine as the base powerplant and the V8-6-4 as an option). Unfortunately, the V8-6-4 worked about as well as the Oldsmobile diesel: very poorly. Within a few years, most owners of these engines had disconnected the rocker-deactivation solenoids and just drove their cars as regular full-time V8s. This one has the snazzy "Cabriolet Roof Treatment" option, which boasted "textured elk grain" vinyl and could be had in one of 17 available colors. Front-wheel drive gave the early-1980s Eldorado plenty of interior space, despite its more proletarian Olds Toronado origins, and these velour-covered seats made for very comfortable road trips. The price tag started at $17,550, or about $51,650 in 2019 dollars. The 1981 Imperial went for $18,311, and that car was based on the same platform as the lowly Plymouth Volare. Meanwhile, A BMW 733i cost $28,945 and a new Toyota Cressida a mere $11,599. The 1981 Cadillacs were just a little too much ahead of their time, it turned out.

Cadillac hid more than two dozen Easter eggs in its Blackwings

Everybody loves Easter eggs, right? Finding one is a great moment, especially if you happen upon it by accident, preferably while simply cleaning or poking around, but maybe because you had to dig around in some far-flung corner of the cabin in search of a persistent rattle or some other issue. A hidden symbol or message from the manufacturer helps remind us that some cars aren't just appliances.  The 2022 Cadillac CT4-V and CT5-V Blackwings are perfect candidates. Not only are they niche enthusiast vehicles whose owners are likely to turn them inside out, but they also benefited greatly from Cadillac's racing efforts, providing ample source material for subtle references all over the car, both inside and out. Enough, in fact, that Cadillac managed to stick more than two dozen of them into its two flagship sport sedans. And since I took delivery of my Blaze Orange CT4 last week, I decided to see if I could spot a few of them myself – because I don't spend enough time crawling all over car interiors already.  Cadillac called several of them out in a press kit Tuesday. Manual-transmission cars like mine have blank-off plates installed where the paddles would go on the back side of the steering wheel, for instance. Rather than just leaving bare plastic that nobody would ever have a reason to look at, Cadillac had a small map of its Milford proving grounds printed on the plates.  Each Blackwing also gets a serial number on the wheel. 46-146 translates to CT4-V Blackwing 6-speed #146. CT5-V Blackwings decode similarly, though their model indicator digit is an 8 rather than a 5. While a steering wheel plaque is not exactly hidden, it's among the items Cadillac noted, as are the "Blackwing" tags on the front seats; the subtle logo in the seatback Alcantara is something I spotted on my own. CT5-V Blackwing models with the carbon fiber seat package get their logos embossed in the seatback. This brings us outside. While I know for a fact that there are several items hidden on the CT4-V's underbody (we got to look at these on a lift back in July), there are a couple of obvious items scattered in more accessible locations. The subtle Cadillac crests in the taillights aren't unique to Blackwing, but they're still nicely done. The stylized "V" in the hood insulation layer looks pretty nice too.  The hidden items differ between the CT4 and CT5-V too, as illustrated by the two wheel images above.

2017 Cadillac CT6 Plug-In Hybrid Drivers' Notes Review | Seamlessly green

In many ways, the Cadillac CT6 Plug-in Hybrid is the most interesting car the brand sells. Despite having a turbocharged four-cylinder hybrid powertrain, it makes the most torque of any CT6, even the twin-turbocharged V6 model. It also has a claimed electric range of 31 miles and can still manage a combined fuel economy of 26 mpg with just the gas engine. Even its origin is interesting, since its final assembly point is China. To cap things off, it's also the second most expensive CT6 in the range. To find out if the CT6 is worth that money, and has more to offer than fun facts, we spent some time behind the wheel. Editor-in-Chief Greg Migliore: I achieved 34.1 miles per gallon for my roughly 14-mile roundtrip in the CT6 hybrid. This sedan is a rolling example of where luxury is heading in the near term: Existing models souped up with hybrid tech, and the green features will go along way toward keeping big sedans like this relevant. It's a smart play for Cadillac to add a product like this. Otherwise, it's a fairly standard-issue CT6, which is a solid car. The flashy head- and taillights look great. The design is angled, creased and nicely proportioned. The interior is comfortable and roomy. It's a nice car. Cadillac invested a lot in the CT6, and it shows. Rumors have long swirled that the brand will add a larger flagship, though in this climate, that's hard to envision. For now, the CT6 does the job as Cadillac's standard bearer. Associate Editor Joel Stocksdale: Of all the different CT6 variants available, the CT6 PHEV is the one I would pick for myself. Why? Because the hybrid powertrain finally delivers on the quiet, refined driving experience I want from a flagship luxury sedan. I was a bit surprised by this, too, since the gas engine under the hood is the 2.0-liter four-cylinder used elsewhere, which isn't the smoothest thing in the world. But assist from the electric motor helps keep the four-cylinder from having to wind up too much to move the big Caddy, and when the gas engine does rev hard, it's well muffled by whatever insulation is in the car. Besides aural refinement, the power delivery is oil-on-ice slick. The blending of electric and gas power is seamless. There's no waiting on the turbo to spool up, and there's no loss of power at higher rpms with the electric motor. They work in perfect harmony providing excellent low-down grunt and solid upper-end power. The transmission is super smooth, too allowing for happy wafting wherever you go.