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One of the world's largest muscle car museums is auctioning off its cars

Rick Treworgy's Muscle Car City is one of the biggest collections of high-performance American cars in the world. With over 200 cars of mostly GM makes, it's a mecca for fans of the golden age of Detroit iron. Unfortunately, the museum will be shutting its doors for good on Jan. 17 and auctioning off most of its assets with no reserve. The collection is, to put it bluntly, astounding. Advertised as a combined 65,000-plus horsepower, it occupies a 60,000-square-foot retail space in Punta Gorda, Fla., in a former Walmart store. It make sense when you learn that founder Rick Treworgy made his fortune in the commercial real estate business. As a hobby, he began to amass a truly jaw-dropping collection of muscle cars, filling out a collection that often has every year of a particular model represented, or a grouping of the rarest and highest-performance option packages of that year or model. Often, Treworgy bought placeholders while scouring the country for even rarer versions. It helps that Muscle Car City also houses a showroom where unwanted cars are sold, as well as its own speed shop that stocks plenty of parts. There's even a '50s-style diner called Stingray's Bar and Grill. According to a 2014 episode of Car Crazy, Treworgy has 80 Corvettes alone, more than the actual Corvette Museum. Among them are 20 models from 1967, one of Treworgy's favorites. The rest span the decades from 1954 (he once had a '53 but sold it) to a recently acquired 2020 C8, which, according to The Drive, has only 300 miles on the odometer. You like Impalas? There are models of every year from 1958 to 1969. El Caminos? He's got 'em from 1964 to 1972. Novas? Every year from 1963 to 1970 is represented. Most are the more desirable examples of each breed, with four-speed transmissions, the biggest blocks, and unicorn option packages like a factory 1965 Z16 SS396 Chevelle, one of 200 that were ordered off-menu at Chevy dealerships. And don't even get us started on the Camaros, which include not one, but two COPO 1969s. Treworgy even owns the only known surviving example of a 1936 Chevrolet Phaeton, of which only seven were built. On top of it all, many of these cars are concours quality and have won awards at prestigious car shows. While it's sad to see a collection like this broken up, Treworgy told The Drive that he'd been planning to retire next year anyway. However, the COVID-19 pandemic sped up those plans, greatly reducing the number of visitors to his museum.

Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video:    

2020 Cadillac CT5-V, CT4-V to be revealed next week

Even though the ATS-V and CTS-V are on the way out, the future is looking bright for Cadillac's high-performance sub-brand. Why is that? Well we're going to see not one, but two all-new V models on May 30. The company revealed its plans to show the 2020 Cadillac CT5-V and the CT4-V in an announcement about 15 years of the V brand. Not much is known about either car, but both should be wickedly quick based on their predecessors. We're particularly curious as to what engines will be used. With the CT5-V, a return of a supercharged pushrod V8 seems possible considering the CT5 is based on the Alpha platform that also underpins the Camaro. But Cadillac may want to push its more unique powertrains such as the twin-turbo, double-overhead-cam 4.2-liter V8 in the CT6-V. In the CT6-V, it makes 550 horsepower and 627 pound-feet of torque. Cadillac's former CEO said that other cars getting the engine will have it 500 horsepower and 553 pound-feet of torque. We think the company could get away with the full power in the CT5-V, though, since each car's mission and character is different. There's also a slim chance we could see a return of the manual transmission for the midsize sports sedan, based on what a Cadillac engineer said. As for the CT4-V, there are more questions, simply because we haven't even seen the regular version yet except in spy shots. Since the CT5 is built off the Alpha platform, it seems reasonable to think the CT4 will do the same, especially since the ATS also used the platform. And to leave space between the CT5-V and itself, using a hot version of the twin-turbo 3.0-liter V6 seems like the most likely choice. The hot V6 in the ATS-V made 464 horsepower and 445 pound-feet of torque, so we would expect the same. Hopefully Cadillac will offer a manual with it again. One final note from the Cadillac V announcement also got our attention. It said that these two cars are "just the beginning." That seems a pretty obvious sign there are other V models in the works. Since the CT4 and CT5 will round out the company's car line, the logical next choice would probably be crossovers. It will be interesting to see what an XT4-V or XT5-V will be like, especially since they use front-drive platforms. But in the meantime, we'll look forward to Cadillac's hot sedans.